D1 EM&A Requirements

D1.1 Introduction

D1.1.1 This Appendix provides a summary of the specific EM&A requirements for Schedule 2 DP1: Central-Wan Chai Bypass (CWB) including its road tunnel and slip roads. The same methodology and equipment will be employed for the noise and air quality monitoring as outlined in Sections 2 and 3 of this EM&A Manual.

D2 AIR QUALITY

D2.1 Introduction

D2.1.1 In this section, the monitoring locations for the monitoring and audit of air quality impacts during the construction phase of DP1 are presented. As the construction dust is the prime concern, TSP levels shall be monitored to evaluate the dust impact during the construction phase.

D2.1.2 The findings of the EIA indicated that no adverse cumulative traffic emission impacts from open road emissions, CWB vent shaft emissions, portal emissions from Cross Harbour Tunnel, existing and planned deckovers and background pollutant levels. No air quality monitoring is considered necessary during the operational phase. Nevertheless, the operator for the proposed CWB tunnel, HyD, will conduct air quality monitoring for the operation performance of the EVB ventilation shaft. Details of the air quality monitoring should be formulated in the detailed design stage subject to agreement between EPD and HyD.

D2.2 Monitoring Locations

D2.2.1 Based on the findings of the EIA report, five representative locations which would be worst affected locations in different area are designated for construction dust monitoring as listed in Table D2.1 and illustrated in Figure 2.2. The status and locations of dust sensitive receivers may change after issuing this manual. If such cases exist, the ET Leader shall propose updated monitoring locations and seek approval from ER and agreement from the IC(E).

Table D2.1 Construction Dust Monitoring Locations

Identification No.	ASR ID in EIA Report	Location
CMA1	A93	North Point – City Garden Block 11
CMA2	A63	North Point – Victoria Centre
CMA3	A50	Causeway Bay – Royal Hong Kong Yacht Club
CMA4	A38	Wanchai – Wanchai Sports Ground
CMA5	A32	Wanchai – Hong Kong Convention & Exhibition Centre

D2.2.2 When alternative monitoring locations are proposed, the proposed site should, as far as practicable:

a) be at the site boundary or such locations close to the major dust emission source;

b) be close to the sensitive receptors; and

c) take into account the prevailing meteorological conditions.

D2.2.3 The ET shall agree with the ER in consultation with the IC(E) on the position of the HVS for the installation of the monitoring equipment. When positioning the samplers, the following points shall be noted:

a) a horizontal platform with appropriate support to secure the samplers against gusty wind should be provided;

b) no two samplers should be placed less than 2 meters apart;

c) the distance between the sampler and an obstacle, such as buildings, must be at least twice the height that the obstacle protrudes above the sampler;

d) a minimum of 2 meters of separation from walls, parapets and penthouses is required for rooftop samplers;

e) a minimum of 2 meters separation from any supporting structure, measured horizontally is required;

f) no furnace or incinerator flue is nearby;

g) airflow around the sampler is unrestricted;

h) the sampler is more than 20 meters from the dripline;

i) any wire fence and gate, to protect the sampler, should not cause any obstruction during monitoring;

j) permission must be obtained to set up the samplers and to obtain access to the monitoring stations; and

k) a secured supply of electricity is needed to operate the samplers.

D2.3 Mitigation Measures

D2.3.1 As described in the EIA Report, the ASRs from Central to Causeway Bay would comply with AQO and EIAO-TM criteria during construction. In order to achieve the air quality criteria, watering with complete coverage of active construction area four times a day and requirements of the Air Pollution Control (Construction Dust) Regulation shall be adhered to during the construction period. The following mitigation measures, good site practices and a comprehensive dust monitoring and audit programme are recommended to minimise cumulative dust impacts.

· Strictly limit the truck speed on site to below 10 km per hour and water spraying to keep the haul roads in wet condition;

· Watering during excavation and material handling;

· Provision of vehicle wheel and body washing facilities at the exit points of the site, combined with cleaning of public roads where necessary; and

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

D2.3.2 If the above measures are not sufficient to restore the air quality to acceptable levels upon the advice of ET Leader, the Contractor shall liaise with the ET Leader on some other mitigation measures, propose to ER for approval, and implement the mitigation measures.

D2.3.3 The implementation schedule for the mitigation measures during construction phase of this DP 1 is presented in Section D9.

D3 NOISE

D3.1 Construction Phase

D3.1.1 Construction noise impacts arising from DP1 are predicted at the identified NSRs. Noise mitigation measures would be required to reduce noise levels to the stipulated standard. A noise monitoring programme shall be undertaken to ensure such mitigation measures would be implemented properly.

D3.1.2 The locations of construction noise monitoring stations are summarized in Table D3.1 and shown in Figure 3.2.

Table D3.1 Construction Noise Monitoring Stations

Noise Monitoring Station	NSR ID (Based on EIA Report)	Noise Monitoring Location
M1	N2	Causeway Centre
M2	N8	Macro Polo Mansion
M3	N11	Mayson Garden
M4	N17	Harbour Heights
M5	N18	Block 10, City Garden
M6	N20	Hong Kong Baptist Church Henrietta Secondary School

D3.1.3 The status and locations of noise sensitive receivers may change after issuing this manual. If such case exists, the ET Leader shall propose updated monitoring locations and seek approval from EPD and agreement from the ER and the IEC before baseline monitoring commences.

D3.1.4 When alternative monitoring locations are proposed, the monitoring locations shall be chosen based on the following criteria:

(i) at locations close to the major site activities which are likely to have noise impacts;

(ii) close to the noise sensitive receivers; and

(iii) for monitoring locations located in the vicinity of the sensitive receivers, care shall be taken to cause minimal disturbance to the occupants during monitoring.

D3.1.5 The monitoring station shall normally be at a point 1 m from the exterior of the sensitive receiver building facade and be at a position 1.2 m above the ground. If there is problem with access to the normal monitoring position, an alternative position may be chosen, and a correction to the measurements shall be made. For reference, a correction of +3 dB(A) shall be made to the free field measurements. The ET shall agree with the IEC on the monitoring position and the corrections adopted. Once the positions for the monitoring stations are chosen, the baseline monitoring and the impact monitoring shall be carried out at the same positions.

D3.1.6 Construction noise mitigation measures for DP1 are included in Section D9. Figure 3.4 shows the locations of temporary noise barriers at NPR2W, NPR1, NPR2E work sites near North Point. Figure 3.5 shows the locations of temporary noise barriers to be mounted on the existing piers of IEC for the demolition works of existing piers and crossheads of the marine section of the existing IEC.

D3.2 Operation Phase

Road Traffic Noise

D3.2.1 After completion of the Designated Projects, a traffic noise monitoring shall be carried out at the NSRs in the vicinity of the recommended direct mitigation measures. The purpose of the monitoring is to ascertain that the noise levels would comply with the noise criteria at the sensitive receivers, and that the recommended mitigation measures are effective in suppressing the noise levels.

D3.2.2 The locations of road traffic noise monitoring stations are summarized in Table D3.2 and shown in Figure 3.3. The monitoring locations shall be selected according to the following criteria:

(i) they shall be at NSRs in the vicinity of recommended direct technical remedies;

(ii) one high floor and one medium floor monitoring points shall be chosen at each location as far as possible; and

(iii) selected monitoring locations shall enable monitoring to be done twice within one year after implementation of the mitigation measures during operation of the proposed road.

Table D3.2 Traffic Noise Monitoring Stations

Noise Monitoring Station	NSR ID (Based on EIA Report)	Noise Monitoring Location
M1	N16	Block 1, Victoria Centre
M2	N18-A	Block 11, City Garden

D3.2.3 The status and locations of the noise sensitive receivers may change after issuing this Manual. If such cases exist, the ET shall propose updated monitoring locations and seek approval from the ER and IEC and agreement from EPD of the proposal.

D3.2.4 When alternative monitoring locations are proposed, the monitoring locations shall be chosen based on the following criteria:

(i) alternative location shall be similarly exposed to potential noise impacts;

(ii) shall be close to the noise sensitive receivers; and

(iii) shall be located so as to cause minimum disturbance to the occupants.

D3.2.5 The traffic noise monitoring shall be carried out a distance of 1m from the openable window and 1.2m above the floor level of the noise sensitive receivers identified. The ET shall agree with the IEC on any necessary corrections adopted.

D3.2.6 Direct noise mitigation measures for DP1 are included in Section D9. Figure 3.6 shows the locations of direct noise mitigation measures.

Fixed Plant Noise

D3.2.7 The EIA findings confirmed that proper designs of the proposed ventilation buildings would control the potential noise impacts at noise sensitive receivers within acceptable levels, and the noise from these facilities would be subject to the control under the Noise Control Ordinance. Notwithstanding this, in view of the likely concern from the local residents near the proposed East Ventilation Building (EVB), monitoring of operation noise from proposed EVB during the testing and commissioning stage shall be carried out as part of the design process to verify the maximum sound power levels as assumed in the noise assessment in the EIA.

D4 WATER QUALITY

D4.1 Water Quality Parameters

D4.1.1 In order to ensure that water quality resources are adequately protected during the construction phase of DP1, it will be necessary for the Contractor to undertake audits to ensure the effective implementation of the recommended mitigation measures as outlined in the EIA and Implementation Schedule (Section D9). Section 9 of this EM&A Manual sets out the requirements of the auditing programme.

D5 WASTE MANAGEMENT

D5.1 Waste Control and Mitigation Measures

D5.1.1 Mitigation measures for waste management of the DP1 are summarised below. The Implementation Schedule of the recommended mitigation measures for DP1 is presented in Section D9. In order to ensure that the mitigation measures are properly implemented by the Contractor, regular site inspections by the ET shall be carried out at least once per week. Details of the audit requirements are set out in Section 9 of this EM&A Manual.

Good Site Practices

D5.1.2 Adverse impacts related to waste management are not expected to arise, provided that good site practices are strictly followed. Recommendations for good site practices during the construction activities include:

· 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 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.

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

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

Waste Reduction Measures

D5.1.3 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:

· Sort C&D waste from demolition of the existing waterfront structures 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, 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.

· Any unused chemicals or those with remaining functional capacity shall be recycled.

· Use of reusable non-timber formwork, such as in casting the tunnel box sections, to reduce the amount of C&D material.

· 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.

D5.1.4 In addition to the above measures, specific mitigation measures are recommended below for the identified waste arisings to minimise environmental impacts during handling, transportation and disposal of these wastes.

General Refuse

D5.1.5 General refuse should be stored in enclosed bins or compaction units separate from C&D material. A licensed 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.

Chemical Wastes

D5.1.6 After use, chemical wastes (for example, cleaning fluids, solvents, lubrication oil and fuel) should be handled according to the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes. Spent chemicals should be collected by a licensed collector for disposal at the CWTF or other licensed facility, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation.

Construction and Demolition Material

D5.1.7 The C&D material should be sorted on-site into inert C&D material (that is, public fill) and C&D waste. Considering that a large quantity of C&D material will be generated from the demolition works and excavation for the tunnel construction and in order to minimise the impact resulting from collection and transportation of material for off-site disposal, it is recommended that the inert C&D material should be re-used on-site in the reclamation works as far as practicable. All the suitable (inert) material should be broken down to 250 mm in size for reuse as public fill and surcharge in the WDII reclamation. C&D waste, such as wood, glass, plastic, steel and other metals should be reused or recycled and, as a last resort, disposed of to landfill. It is recommended that a suitable area be designated to facilitate the sorting process and a temporary stockpiling area will be required for the separated materials.

D5.1.8 In order to monitor the disposal of public fill and C&D waste at public fill reception facilities and landfills, respectively, and to control fly tipping, a trip-ticket system should be included as one of the contractual requirements and implemented by an Environmental Team undertaking the Environmental Monitoring and Audit work. An Independent Environmental Checker should be responsible for auditing the results of the system.

D5.1.9 Bentonite slurries used in diaphragm wall and bore-pile construction should be reconditioned and reused wherever practicable. The disposal of residual used bentonite slurry should follow the good practice guidelines stated in ProPECC PN 1/94 “Construction Site Drainage” and listed as follows:

· If the disposal of a certain residual quantity cannot be avoided, the used slurry may be disposed of at the marine spoil grounds subject to obtaining a marine dumping licence from EPD on a case-by-case basis.

· If the used bentonite slurry is intended to be disposed of through the public drainage system, it should be treated to the respective effluent standards applicable to foul sewers, storm drains or the receiving waters as set out in the Technical Memorandum of Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters.

· If the used bentonite slurry is intended to be disposed to public fill reception facilities, it will be mixed with dry soil on site before disposal.

D6 LAND CONTAMINATION

D6.1.1 As no land contamination impacts were identified for both construction and operational phase of the Project, EM&A works for land contamination were therefore considered not necessary.

D7 MARINE ECOLOGY

D7.1.1 As no adverse ecological impact on marine resources is identified, no necessary mitigation measures and monitoring programme specific for the marine ecology is considered as required in the impact assessment. The mitigation measures and monitoring programme recommended in the water quality impact assessment to control water quality would also serve to protect marine ecological resources from indirect impacts and ensure no adverse impact on marine life would be resulted from this designated project.

D8 LANDSCAPE AND VISUAL

D8.1 Introduction

D8.1.1 The EIA has recommended landscape and visual mitigation measures to be undertaken during both the construction and operational phases of the project. This section outlines the monitoring and audit of these measures.

D8.1.2 The key landscape resources, landscape character areas and visual sensitive receivers are shown in Figures 8.1a, 8.1b, 8.2a, 8.2b, 8.3a, 8.3b, 8.3c.

D8.2 Monitoring Details

D8.2.1 The design, implementation and maintenance of landscape mitigation measures should be checked to ensure that they are fully realised and that potential conflicts between the proposed landscape measures and any other project works and operational requirements are resolved at the earliest possible date and without compromise to the intention of the mitigation measures.

Table D8.1 Monitoring Programme

Stage	Monitoring Task	Monitoring Report	Form of Approval	Frequency
Design	Monitoring of design works against the recommendations of the landscape and visual impact assessments within the EIA should be undertaken during detailed design and tender stages, to ensure that they fulfil the intentions of the mitigation measures. Any changes to the design, including design changes on site should also be checked.	Report by ER confirming that the design conforms to requirements of EP	Approved by Client	At Completion of Design Stage
Construction	Monitoring of the contractor’s operations during the construction period.	Report on Contractor's compliance, by ET	Counter-signature of report by IC(E)	Weekly
Establishment Works	Monitoring of the planting works during the 24-month Establishment period after completion of the construction works.	Report on Contractor's compliance, by ET	Counter-signature of report by IC(E)	3 months
Long Term Operation (5 years)	Monitoring of the long-term management of the planting works in the period up to 5 years after completion of the construction works.	Report on compliance by ET or Maintenance Agency	Counter-signature of report by Management Agency	12 months

Design

D8.2.2 The mitigation measures proposed within the EIA to mitigate the landscape and visual impacts of the scheme should be embodied into the detailed engineering design and landscape design drawings and contract documents. Designs should be checked to ensure that the measures are fully incorporated and that potential conflicts with civil engineering, geo-technical, structural, lighting, signage, drainage, underground utility and operational requirements are resolved prior to construction.

D8.2.3 The Client should prepare a detailed 5-Year Management Programme for the long-term management and maintenance of the planting works following the Establishment periods. The Programme should include evaluation and objectives for management, details of the operations to be undertaken to achieve these objectives, and outline of work programmes.

Construction & Establishment Period

D8.2.4 The implementation of landscape construction works and subsequent maintenance operations during the 12-month establishment period must be supervised by fully qualified Landscape Resident Site Staff (Registered Landscape Architect or Professional Member of the Hong Kong Institute of landscape Architects).

D8.2.5 Measures to mitigate landscape and visual impacts during construction should be checked to ensure compliance with the intended aims of the measures.

D8.2.6 The progress of the engineering works shall be regularly reviewed on site to identify the earliest practical opportunities for the landscape works to be undertaken.

Long Term Management

D8.2.7 The success or otherwise of all planting works intended to mitigate the visual and landscape impact of the roads, the noise barriers/screening/semi-enclosures and street lighting shall be monitored during the first ten years of the operational phase of the project. Any areas of vegetation which have failed to establish, should be corrected by the appropriate maintenance authorities at the earliest opportunity. Monitoring should include the long-term maintenance of the planting works under the detailed 5-Year Management Programme.

D8.3 Baseline Monitoring

D8.3.1 A photographic record of the site at the time of the contractor’s possession of the site shall be prepared by the Contractor and approved by the ER. The approved photographic Record shall be submitted to the Project proponent, ET, IC(E) and EPD for record.

D8.4 Event/Action Plan for Landscape and Visual Works

D8.4.1 Should non-compliance of the landscape and visual impacts occur, actions in accordance with the action plan stated in Table D8.2 and D8.3 should be carried out.

Table D8.2 Construction & Establishment Periods

Event Action level	Action
	Et	Ic(e)	Er	Contractor
Design Check	· Check final design conforms to the requirements of EP and prepare report.	· Check report. · Recommend remedial design if necessary	· Undertake remedial design if necessary
Non-conformity on one occasion	· Identify Source · Inform IC(E) and ER · Discuss remedial actions with IC(E), ER and Contractor · Monitor remedial actions until rectification has been completed	· Check report · Check Contractor's working method · Discuss with ET and Contractor on possible remedial measures · Advise ER on effectiveness of proposed remedial measures. · Check implementation of remedial measures.	· Notify Contractor · Ensure remedial measures are properly implemented	· Amend working methods · Rectify damage and undertake any necessary replacement
Repeated Non-conformity	· Identify Source · Inform IC(E) and ER · Increase monitoring frequency · Discuss remedial actions with IC(E), ER and Contractor · Monitor remedial actions until rectification has been completed · If non-conformity stops, cease additional monitoring	· Check monitoring report · Check Contractor's working method · Discuss with ET and Contractor on possible remedial measures · Advise ER on effectiveness of proposed remedial measures · Supervise implementation of remedial measures.	· Notify Contractor · Ensure remedial measures are properly implemented	· Amend working methods · Rectify damage and undertake any necessary replacement

Table D8.3 Long Term Management

Event	Action
Action Level	Maintenance Agency	Management Agency
Non-conformity	· Identify Source · Discuss remedial actions with Management Agency · Monitor remedial actions until rectification has been completed	· Check report · Discuss with Maintenance Agency possible remedial measures · Supervise implementation of remedial measures.

D8.5 Mitigation Measures

D8.5.1 The landscape and visual impact assessment of the EIA recommends a series on mitigation measures, as noted below:

Landscape and Visual Mitigation Measures during Construction Phase

· Topsoil, where identified, should be stripped and stored for re-use in the construction of the soft landscape works, where practical (CM1);

· Existing trees to be retained on site should be carefully protected during construction (CM2);

· Trees unavoidably affected by the works should be transplanted where practical (CM3);

· Compensatory tree planting should be provided to compensate for felled trees (CM4);

· Control of night-time lighting (CM5);

· Erection of decorative screen hoarding compatible with the surrounding setting (CM6).

Landscape and Visual Mitigation Measures during Operation Phase

· Aesthetic design of buildings and road-related structures, including viaducts, vent buildings, subways, footbridges and noise barriers and enclosure (OM1);

· Shrub and Climbing Plants to soften proposed structures (OM2);

· Buffer Tree and Shrub Planting to screen proposed roads and associated structures (OM3);

· Aesthetic streetscape design (OM5);

· Aesthetic design of roadside amenity areas (OM6).

D9 IMPLEMENTATION SCHEDULE OF THE PROPOSED MITIGATION MEASURES

Table D9.1 Implementation Schedule for Air Quality Control

EIA Ref	Environmental Protection Measures / Mitigation Measures	Location / Timing	Implementation Agent	Implementation Stages*					Relevant Legislation and Guidelines
				Des		C	O	Dec
Construction Phase
S3.6.5	Four times a day watering of the work site with active operations.	Work site / during construction	Contractor		Ö				EIAO-TM
S3.8.1	Implementation of dust suppression measures stipulated in Air Pollution Control (Construction Dust) Regulation. The following mitigation measures, good site practices and a comprehensive dust monitoring and audit programme are recommended to minimise cumulative dust impacts. · Strictly limit the truck speed on site to below 10 km per hour and water spraying to keep the haul roads in wet condition; · Watering during excavation and material handling; · Provision of vehicle wheel and body washing facilities at the exit points of the site, combined with cleaning of public roads where necessary; and	Work site / during construction	Contractor		Ö
	· Tarpaulin covering of all dusty vehicle loads transported to, from and between site locations.
Operational Phase
S3.6.53 – S3.6.54	The design parameters of the East and Central Ventilation Buildings as set in Tables 3.10 and 3.11 of Volume 1 of the EIA Report.	East and Central Ventilation Buildings / During operation of the Trunk Road	HyD				Ö
S3.10.2	Air quality monitoring for the operation performance of the East Ventilation Building and associated East Vent Shaft will be conducted.	East Vent Shaft / During operation of the East Ventilation Building and associated East Vent Shaft	HyD				Ö		EIAO-TM

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

Table D9.2 Implementation Schedule for Noise Control

EIA Ref	Environmental Protection Measures / Mitigation Measures	Location / Timing	Implementation Agent	Implementation Stages*				Relevant Legislation and Guidelines
				Des	C	O	Dec
Construction Phase
S4.9.3	Good Site Practice: Ÿ Only well-maintained plant shall be operated on-site and plant shall be serviced regularly during the construction program. Ÿ Silencers or mufflers on construction equipment shall be utilized and shall be properly maintained during the construction program. Ÿ Mobile plant, if any, shall be sited as far away from NSRs as possible. Ÿ Machines and plant (such as trucks) that may be in intermittent use shall be shut down between works periods or shall be throttled down to a minimum. Ÿ Plant known to emit noise strongly in one direction shall, wherever possible, be orientated so that the noise is directed away from the nearby NSRs. Ÿ Material stockpiles and other structures shall be effectively utilized, wherever practicable, in screening noise from on-site construction activities.	Work Sites / During Construction	Contractor		Ö			EIAO-TM, NCO
S4.8.1 –S4.8.11	Use of quiet powered mechanical equipment, movable noise barrier and temporary noise barrier for the following tasks: · Slip road 8 tunnel · Construction of diaphragm wall and substructures of the tunnel approach ramp · Excavation · Construction of slabs · Backfill	Work Sites / During Construction	Contractor		Ö			EIAO-TM, NCO
	· Demolition and construction of substructures for the IEC · Demolition works of existing piers and crossheads of the marine section of the existing IEC Use of PME grouping for the following tasks: · At-grade road construction · Substructure for IECL connection
Operation Phase
S4.8.12 – S4.8.23	For Existing NSRs · about 235m length of noise semi-enclosure with transparent panel covering the westbound slip road from the IEC · about 230m length of noise semi-enclosure with transparent panel covering the main carriageways (eastbound and westbound) of the CWB and IEC · about 135m length of 5.5m high cantilevered noise barrier with 3m cantilever inclined at 45° with transparent panel on the eastbound slip road to the IEC · about 95m length of 5.5m high cantilevered noise barrier with 1m cantilever inclined at 45° with transparent panel on the eastbound slip road to the IEC · about 350m length of 3.5m high vertical noise barrier with transparent panel on the eastbound slip road to the IEC · low noise road surfacing for the trunk road (except tunnel section and beneath the landscaped deck at the eastern portal area)) with speed limit of 70 km/hour	Near North Point / Before commencement of operation of road project	HyD	Ö	Ö	Ö		EIAO-TM
	For Future/Planned NSRs · about 265m length of noise semi-enclosure with transparent panel covering the westbound slip road from the IEC	In between the Electric Centre (next to City Garden) and CDA(1) site / Before occupation of Planned NSRs in CDA and CDA(1) sites.	HyD	Ö	Ö ^#
	· The openable windows of the temple, if any, should be orientated so as to avoid direct line of sight to the existing Victoria Park Road as far as practicable.	Near Causeway Bay Fire Station / During detailed design of the re-provisioned Tin Hau Temple	Project Proponent for the re-provisioned Tin Hau Temple	Ö

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

# Only the steel frame for this section of noise semi-enclosure would be erected in advance during the construction of the westbound slip road.

Table D9.3 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	Dec
Construction Phase
S5.8	Construction Runoff and Drainage Exposed soil areas should be minimised to reduce the potential for increased siltation, contamination of runoff, and erosion. Construction runoff related impacts associated with the above ground construction activities can be readily controlled through the use of sediment traps and adequate maintenance of drainage systems to prevent flooding and overflow. Construction site should be provided with adequately designed perimeter channel and pre-treatment facilities and proper maintenance. The boundaries of critical areas of earthworks should be marked and surrounded by dykes or embankments for flood protection. Temporary ditches should be provided to facilitate runoff discharge into the appropriate watercourses, via a silt retention pond. Permanent drainage channels should incorporate sediment basins or traps and baffles to enhance deposition rates. The design of efficient silt removal facilities should be based on the guidelines in Appendix A1 of ProPECC PN 1/94. Ideally, construction works should be programmed to minimise surface excavation works during the rainy season (April to September). All exposed earth areas should be completed as soon as possible after earthworks have been completed, or alternatively, within 14 days of the cessation of earthworks where practicable. If excavation of soil cannot be avoided during the rainy season, or at any time of year when rainstorms are likely, exposed slope surfaces should be covered by tarpaulin or other means. A sediment tank constructed from pre-formed individual cells of approximately 6 ‑ 8 m3 capacity can be used for settling ground water prior to disposal; Open stockpiles of construction materials (for examples, aggregates, sand and fill material) of more than 50 m3 should be covered with tarpaulin or similar fabric during rainstorms. Measures should be taken to prevent the washing away of construction materials, soil, silt or debris into any drainage system.	Work site / During the construction period	Contractor		Ö			ProPECC PN 1/94; WPCO (TM-DSS)
S5.8	Manholes (including newly constructed ones) should always be adequately covered and temporarily sealed so as to prevent silt, construction materials or debris being washed into the drainage system and storm runoff being directed into foul sewers. Precautions to be taken at any time of year when rainstorms are likely, actions to be taken when a rainstorm is imminent or forecast, and actions to be taken during or after rainstorms are summarised in Appendix A2 of ProPECC PN 1/94. Particular attention should be paid to the control of silty surface runoff during storm events. Oil interceptors should be provided in the drainage system and regularly cleaned to prevent the release of oils and grease into the storm water drainage system after accidental spillages. The interceptor should have a bypass to prevent flushing during periods of heavy rain. All vehicles and plant should be cleaned before leaving a construction site to ensure no earth, mud, debris and the like is deposited by them on roads. An adequately designed and located wheel washing bay should be provided at every site exit, and wash-water should have sand and silt settled out and removed at least on a weekly basis to ensure the continued efficiency of the process. The section of access road leading to, and exiting from, the wheel-wash bay to the public road should be paved with sufficient backfall toward the wheel-wash bay to prevent vehicle tracking of soil and silty water to public roads and drains.	Work site / During the construction period	Contractor		Ö			ProPECC PN 1/94; WPCO (TM-DSS)
S5.8	It is recommended that on-site drainage system should be installed prior to the commencement of other construction activities. Sediment traps should be installed in order to minimise the sediment loading of the effluent prior to discharge into foul sewers. There shall be no direct discharge of effluent from the site into the sea. All temporary and permanent drainage pipes and culverts provided to facilitate runoff discharge shall be adequately designed for the controlled release of storm flows. All sediment control measures shall be regularly inspected and maintained to ensure proper and efficient operation at all times and particularly following rain storms. The temporarily diverted drainage shall be reinstated to its original condition when the construction work is finished or the temporary diversion is no longer required.	Work site / During the construction period	Contractor		Ö			ProPECC PN 1/94; WPCO (TM-DSS)
	All fuel tanks and store areas shall be provided with locks and be sited on sealed areas, within bunds of a capacity equal to 110% of the storage capacity.
S5.8	Sewage from Construction Work Force Construction work force sewage discharges on site shall be connected to the existing trunk sewer or sewage treatment facilities. The construction sewage shall be handled by portable chemical toilets prior to the commission of the on-site sewer system. Appropriate numbers of portable toilets shall be provided by a licensed contractor to serve the large number of construction workers over the construction site. The Contractor shall also be responsible for waste disposal and maintenance practices.	Work site / During the construction period	Contractor		Ö			ProPECC PN 1/94; WPCO (TM-DSS)
S5.8	Floating Debris and Refuse Collection and removal of floating refuse shall be performed at regular intervals on a daily basis. The contractor shall be responsible for keeping the water within the site boundary and the neighbouring water free from rubbish.	Work site and adjacent water / During the construction period.	Contractor		Ö			WPCO
S5.8	Storm Water Discharges Minimum distances of 100 m shall be maintained between the existing or planned stormwater discharges and the existing or planned WSD flushing water intakes.	Work site and adjacent water / During the design and construction period.	Contractor	Ö	Ö			WPCO
Operation Phase
S5.8	For the operation of CWB, a surface water drainage system would be provided to collect road runoff. The following operation stage mitigation measures are recommended to ensure road runoff would comply with the TM under the WPCO:	CWB/During design and operational period	HyD/TD^3	Ö		Ö		WPCO
	· The drainage from tunnel sections shall be directed through petrol interceptors to remove oil and grease before being discharged to the nearby foul water manholes. · Petrol interceptors shall be regularly cleaned and maintained in good working condition.
	· Oily contents of the petrol interceptors shall be properly handled and disposed of, in compliance with the requirements of the Waste Disposal Ordinance. · Sewage arising from ancillary facilities of CWB (for examples, car park, control room, ventilation and administration buildings and tunnel portals) shall be connected to public sewerage system. Sufficient capacity in public sewerage shall be made available to the proposed facilities. · Road drainage shall also be provided with adequately designed silt trap to minimize discharge of silty runoff. · The design of the operational stage mitigation measures for CWB shall take into account the guidelines published in ProPECC PN 5/93 “Drainage Plans subject to Comment by the EPD.” All operational discharges from the CWB into drainage or sewerage systems are required to be licensed by EPD under the WPCO.

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

³ if employ Management, Operation and Maintenance (MOM) Contract

Table D9.4 Implementation Schedule for Waste Management

EIA Ref	Environmental Protection Measures / Mitigation Measures	Location / Timing	Implementation Agent		Implementation Stages*				Relevant Legislation and Guidelines
					Des	C	O	Dec
Construction Phase
S6.5.14	Floating Refuse During the construction phase, the project proponent’s contractor will be responsible for the collection of any refuse within their works area. Floating booms will be provided on the water surface to confine the refuse from the working barges as well as to avoid the accumulation of pollutants within temporary embayment as mentioned in Table D9.3.	Work site / During the construction period		Contractor		Ö
S6.6.1	Good Site Practices Recommendations for good site practices during the construction activities include: · 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 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; · regular cleaning and maintenance programme for drainage systems, sumps and oil interceptors; and · a recording system for the amount of wastes generated, recycled and disposed of (including the disposal sites).	Work site / During the construction period		Contractor		Ö			Waste Disposal Ordinance (Cap.354)
S6.6.2	Waste Reduction Measures 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: · 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; · to encourage collection of aluminium cans, PET bottles and paper, separate labelled bins shall be provided to segregate these wastes from other general refuse generated by the work force; · any unused chemicals or those with remaining functional capacity shall be recycled; · use of reusable non-timber formwork, such as in casting the tunnel box sections, to reduce the amount of C&D material. · 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; · proper storage and site practices to minimise the potential for damage or contamination of construction materials; and · plan and stock construction materials carefully to minimise amount of waste generated and avoid unnecessary generation of waste.	Work site / During planning and design stage, and construction stage		Contractor	Ö	Ö
S6.6.4	General Refuse General refuse shall be stored in enclosed bins or compaction units separate from C&D material. A licensed waste collector shall be employed by the contractor to remove general refuse from the site, separately from C&D material. A collection area shall be provided where wastes can be stored and loaded prior to removal from site. An enclosed and covered area is recommended to reduce the occurrence of 'wind blow' light material.	Work site / During the construction period		Contractor		Ö			Public Health and Municipal Services Ordinance (Cap. 132)
S6.6.5	Chemical Wastes After use, chemical wastes (for example, cleaning fluids, solvents, lubrication oil and fuel) shall be handled according to the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes. Spent chemicals shall be collected by a licensed collector for disposal at the CWTF or other licensed 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 Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes
S6.6.6	Construction and Demolition Material C&D material shall be sorted on-site into inert C&D material (that is, public fill) and C&D waste. All the suitable inert C&D material shall be broken down to 250 mm in size for reuse as public fill in the WDII reclamation. C&D waste, such as wood, glass, plastic, steel and other metals shall be reused or recycled and, as a last resort, disposed of to landfill. A suitable area shall be designated to facilitate the sorting process and a temporary stockpiling area will be required for the separated materials.	Work site / During the construction period		Contractor		Ö			ETWB TCW No. 33/2002, 31/2004, 19/2005
S6.6.7	In order to monitor the disposal of public fill and C&D waste at public fill reception facilities and landfills, respectively, and to control fly tipping, a trip-ticket system shall be included as one of the contractual requirements and implemented by the Environmental Team undertaking the environmental monitoring and audit work. An Independent Environment Checker shall be responsible for auditing the results of the system.	Work site / During the construction period		Contractor and Independent Environmental Checker		Ö			ETWB TCW No. 31/2004
S6.6.8	Bentonite Slurry The disposal of residual used bentonite slurry shall follow the good practice guidelines stated in ProPECC PN 1/94 “Construction Site Drainage” and listed as follows: · If the disposal of a certain residual quantity cannot be avoided, the used slurry may be disposed of at the marine spoil grounds subject to obtaining a marine dumping licence from EPD on a case-by-case basis. · If the used bentonite slurry is intended to be disposed of through the public drainage system, it shall be treated to the respective effluent standards applicable to foul sewers, storm drains or the receiving waters as set out in the Technical Memorandum of Standards for Effluents Discharged into Drainage and Sewerage Systems, Inland and Coastal Waters. · If the used bentonite slurry is intended to be disposed to public fill reception facilities, it will be mixed with dry soil on site before disposal.	Work site / During the construction period		Contractor		Ö			ProPECC PN 1/94

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

Table D9.5 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	Dec
Construction and Operation Phase
S.7.1.1	As no potential contaminative land uses were identified within the Study Area, adverse land contamination impacts associated with the construction and operation of the Project is not expected. As such, environmental protection and mitigation measures are considered not necessary.	-		-					-

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

Table D9.6 Implementation Schedule for Marine Ecology

EIA Ref	Environmental Protection Measures / Mitigation Measures	Location / Timing	Implementation Agent		Implementation Stages*				Relevant Legislation and Guidelines
					Des	C	O	Dec
Construction & Operation Phases
S.9.7.1	As no adverse ecological impact on marine habitats and associated wildlife is identified, no necessary mitigation measure is considered as required in this assessment. The mitigation measures recommended in the water quality impact assessment to control water quality would also serve to protect marine ecological resources from indirect impacts and ensure no adverse impact on marine life would be resulted from this designated project.	-		-					-

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

Table D9.7 Implementation Schedule for Landscape and Visual

EIA Ref	Environmental Protection Measures / Mitigation Measures	Location / Timing	Implementation Agent		Implementation Stages*				Relevant Legislation and Guidelines
					Des	C	O	Dec
Construction Phase
Table 10.5	CM1 Topsoil, where identified, shall be stripped and stored for re-use in the construction of the soft landscape works, where practical.	Work site / During Construction Phase		Contractor	Ö	Ö			EIAO TM
Table 10.5	CM2 Existing trees to be retained on site shall be carefully protected during construction.	Work site / During Construction Phase		Contractor	Ö	Ö			EIAO TM
Table 10.5	CM3 Trees unavoidably affected by the works shall be transplanted where practical.	Work site / During Construction Phase		Contractor	Ö	Ö			EIAO TM
Table 10.5	CM4 Compensatory tree planting shall be provided to compensate for felled trees.	Work site / During Construction Phase		Contractor	Ö	Ö			EIAO TM
Table 10.5	CM5 Control of night-time lighting.	Work site / During Construction Phase		Contractor		Ö			EIAO TM
Table 10.5	CM6 Erection of decorative screen hoarding compatible with the surrounding setting.	Work site / During Construction Phase		Contractor		Ö			EIAO TM
Operation Phase
Table 10.6, Figure 10.5.1-10.5.5	OM1 Aesthetic design of buildings and road-related structures, including viaducts, vent buildings, subways, footbridges and noise barriers and enclosure.	Work site / During Design Stage and Operation Phases		HyD	Ö	Ö	Ö		ETWB TCW 2/2004
Table 10.6, Figure 10.5.1-10.5.5	OM3 Buffer Tree and Shrub Planting to screen proposed roads and associated structures.	Work site / During Design Stage and Operation Phases		HyD	Ö	Ö	Ö		ETWB TCW 2/2004
Table 10.6, Figure 10.5.1-10.5.5	OM5 Aesthetic streetscape design.	Work site / During Design Stage and Operation Phases		HyD	Ö	Ö	Ö		ETWB TCW 2/2004
Table 10.6, Figure 10.5.1-10.5.5	OM6 Aesthetic design of roadside amenity areas.	Work site / During Design Stage and Operation Phases		HyD	Ö	Ö	Ö		ETWB TCW 2/2004

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