APPENDIX C         IMPLEMENTATION SCHEDULE OF PROPOSED MITIGATION MEASURES

 

Table C.1      Implementation Schedule for Air Quality Control

EIA Ref #

EM&A Ref

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

Des

C

O

Dec

Construction Phase

For the Whole Project (include TCS, TKL, PSK & TKOL Development, WCR, CBL, Road P2 and Road D4 Flyover)

 

 

 

 

 

S3.8.1

2.9.3

The Air Pollution Control (Construction Dust) Regulation shall be implemented and good site practices shall be incorporated in the contract clauses to minimize construction dust impact.  A number of practical measures are listed below:

·       Use of regular watering to reduce dust emissions from exposed site surfaces and unpaved road, with complete coverage, particularly during dry weather;

·       Use of frequent watering for particularly dusty static construction areas 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;

·       Tarpaulin covering of all dusty vehicle loads transported to, from and between site location;

·       Establishment and 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;

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

·       Instigation of an environmental monitoring and auditing program to monitor the construction process in order to enforce controls and modify method of work if dusty conditions arise.

 

To reduce dust impact arising from the Project at the ASRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

TM on EIA process, APCO, Air Pollution Control (Construction Dust) Regulation

S3.8.2

2.9.4

Strictly limit the truck speed on site not more than 10 km per hour and watering the haul roads at least 4 times a day.

Reduce 75% dust generation from haul roads within PSK site formation (levelling & filling) and construction  of WCR

Haul roads within PSK site formation &  construction  of WCR / during construction

CEDD’s Contractor

 

Ö

 

 

TM on EIA process, APCO, Air Pollution Control (Construction Dust) Regulation

S3.8.2

2.9.4

Strictly limit the truck speed on site not more than 10 km per hour and water spraying to keep the haul roads in wet condition.

Reduce 90% dust generation from haul roads within WCR reclamation works phase 2 & 3

Haul roads Within WCR reclamation works phase 2 & 3 / during construction

CEDD’s Contractors

 

Ö

 

 

TM on EIA process, APCO, Air Pollution Control (Construction Dust) Regulation

Operational Phase

For WCR

 

 

 

 

 

 

 

 

 

S3.8.3

2.9.5

Eastern Portal Ventilation Building located at the end of eastern portal of WCR shall take 70% of the tunnel emission from eastbound carriageway in the WCR tunnel.  The exhaust vent shaft should be designed to exhaust in upward direction with exit velocity of 16m/s and the exhaust height should be at least 25m above ground level.

To reduce eastern portal emission from WCR tunnel to nearby ASRs

Eastern Portal Ventilation Building/

During design, construction & operation phases

 

 

 

CEDD

Ö

Ö

Ö

 

 

S3.8.3

2.9.5

The Mid-ventilation building shall take 90% of the tunnel emission from westbound carriageway in the WCR tunnel, and should be relocated from Tiu Keng Leng to the proposed reclamation area near CBL/WCR/Road P2 Interchange.  The mid-ventilation building on the reclamation area should be at least 350 m to south of Ocean Shores.  The exhaust vent shafts of the ventilation building would still be upward direction with the exit velocity of 16 m/s, and release height still be 6 m above ground. 

To reduce western portal emission from WCR tunnel to nearby ASRs

Mid-Ventilation Building/

During design, construction & operation phases

CEDD

Ö

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, O – Operation, and Dec - Decommissioning

 
Table C.2      Implementation Schedule for Noise Control

EIA Ref #

EM&A Ref

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

 

Des

C

O

Dec

 

For TCS, TKL, PSK & TKOL Development

 

 

 

 

 

 

 

 

 

S4.9.1

3.8.1

Use of quiet powered mechanical equipment for following tasks:

(a)   TCS, TKL, PSK & TKOL Development

-       Mobilisation

-       Removal of Preloading Mound

-       Drains, Sewers, Waterworks, Utilities and Roadworks for L651, L661, L662, L671, 672, 673, 681, L721 & L722

-       Box Culvert Realignment

-       Piled Deck at Western Box Culvert

-       Landscape Works

-       Rasing of Existing Seawall (for work site in vicinity of NSR 65C2 only)

 

(b)   Engineering Infrastructure for TKOL

-         Northern Cycletrack Footbridge across EC

-         Cycletrack and Footpath along TKOL

-         Southern Footbridge across EC (for the work site in vicinity of NSRs 65C2 only)

 

To minimize construction noise impact arising from the Project at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

S4.9.3

3.8.2

Use of movable noise barrier for following tasks:

(a)  TCS, TKL, PSL & TKOL Development

-       Roadworks for L661 & L662 (cantilever barrier for School “65C3”)

-       Landscape Works

-       Roadworks for L673 and Road L681 (cantilever barrier for School “67S3” only)

-       Road L681 (for school “65C2” only)

-       Drains, Sewers, Waterworks, Utilities for L661   & L662 (for School “65C3” only)

 

To minimize construction noise impact arising from the Project at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

For WCR

 

 

 

 

 

 

 

 

 

 

S4.9.1

3.8.1

Use of quiet powered mechanical equipment for following tasks:

(a)  Reclamation Phase 1

-       Filling behind seawall

-       Surcharging and Consolidation (Surcharge Removal)

-       Access Ramp to Tunnel Portal

 

(b)  Reclamation Phase 2

-       Surcharging and Consolidation (Surcharge Removal)

 

(c)  Toll Plaza and At-grade Roads

-       Road Embankment

-       Construction of Concrete Pavement

-       Toll booths and footbridge

 

To minimize construction noise impact arising from the WCR at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

S4.9.1

3.8.1

(d)  Section between Western Portal      

       and Road A

-       Excavation at Tunnel Portal

-       Site Formation and construction of New Lam Tin Ambulance Deport

-       Ambulance Depot Construction

-        Clearance and Demolition of Ambulance Deport

-        Foundation Works for Bridge Abutment and Piers

-        Bridge Deck Construction

-        Drainage and Utilities Works, at-grade Road Construction, Roadworks and Signage

-        Installation of noise barriers / enclosures

-        Landscape Works

 

(e)   Section between Road A and  VFP

-        Excavation Works, Cut and Cover tunnel

-        Piling Works, Pile Caps, Columns, Abutment Construction

-       Bridge Deck Construction

 

To minimize construction noise impact arising from the WCR at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

S4.9.3

3.8.2

Use of movable noise barrier for following tasks:

(a)    Section between Western Portal and Road A

-       Clearance and Demolition of Ambulance Depot

-       Foundation Works for Bridge Abutment and Piers

-       Bridge Deck Construction

 

To minimize construction noise impact arising from the WCR at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

S4.9.3

3.8.2

-       Roadworks & Signage and Noise barrier installation

-       Excavation at Tunnel portal (for School “StA” only)

-       Site formation for New Lam Tin Ambulance Deport (for School “StA” only)

-       Filling at ex-EHC Casting Basin (for “StA” only)

 

(b)    Section between Road A & VFP

-       Bridge Deck Construction

 

To minimize construction noise impact arising from the WCR at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

For CBL

 

 

 

 

 

 

 

 

 

 

S4.9.1

3.8.1

Use of quiet powered mechanical equipment for following tasks:

 

(a)  Viaduct Section (Bridges A, B & C)

-       Piling Works, Pile Cap & Column, Bridge Deck and  Roadworks & Signage

 

(b)  Road Section along Area 86

-        Drainage, Waterworks and Utilities Works

-       Roadworks and Signage, Noise Barrier Installation and  Landscape Works

-        Laying of 300mm diameter watermain along Wan Po Road

(c)   WCR/CBL/Road P2 Interchange

-        Bridge Deck Construction, Roadworks & Signage

-        Natural terrain mitigation works and Landscape Works

 

To minimize construction noise impact arising from the CBL at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

S4.9.3

3.8.2

Use of movable noise barrier for following tasks:

Road Section along Area 86

-       Noise Barrier Installation      

-       Laying of 300mm diameter watermain along Wan Po Road

 

To minimize construction noise impact arising from the CBL at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

For Road P2 and Road D4 Flyover

 

 

 

 

 

 

 

 

 

4.9.1

3.8.1

Use of quiet powered mechanical equipment for following tasks:

 

(a)   Road D4 Flyover

-         Piling Works, Pile Cap & Column Construction, Bridge Deck Construction

-          Drainage, Waterworks, Utilities, Roadworks & Landscape Works

 

(b)    Road P2 (Depressed Section)

-         Diaphragm Wall, Piling Works, Wall & Slab Construction

-         Decking Construction

-         Pumping Station Construction

-         Drainage, Waterworks, Utilities, Roadworks

 

(c)   Road P2 (At-Grade Section)

-       Drainage, Waterworks, Utilities Works

-       Road Works & Landscape Works

 

To minimize construction noise impact arising from the Road P2 and Road D4 Flyover at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

S4.9.3

3.8.2

Use of movable noise barrier for following tasks:

 (a) Road P2 (Depressed Section)

-         Diaphram Wall, Piling Works, Wall & Slab Construction

-         Decking Construction

-         Pumping Station Construction

-         Roadworks

 

(b) Road P2 (At-grade Section)

-          Roadworks

 

To minimize construction noise impact arising from the Road P2 and Road D4 Flyover at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

For the Whole Project (include TCS, TKL, PSK & TKOL Development, WCR, CBL, Road P2 and Road D4 Flyover)

 

 

 

S4.9.5

3.8.3

Adoption of good site practices listed below:

·       Noisy equipment and activities shall be sited by the contractor as far from sensitive receivers as is practical. 

·       Intermittent noisy activities shall be scheduled to minimize exposure of nearby NSRs to high levels of construction noise.

·       Idle equipment shall be turned off or throttled down.

·       Noisy equipment shall be properly maintained and used no more often than is necessary.

 

To minimize construction noise impact arising from the Project at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

S4.9.5

3.8.3

·       Construction activities shall be planned so that parallel operation of several sets of equipment close to a given receiver is avoided;

·       Where possible, the numbers of concurrently operating items of plant shall be reduced through sensitive programming; and

·       A noise monitoring programme shall be instigated.

 

To minimize construction noise impact arising from the Project at the affected NSRs

Work site / during construction

CEDD’s Contractors

 

Ö

 

 

NCO, TM on EIA Process

 

Operation Phase

For TCS, TKL, PSK & TKOL Development

 

 

 

 

 

 

 

 

 

S4.9.12

3.8.5

For Pak Shing Kok (Area 78), a 5m high boundary wall at the site boundary of Area 78E facing Wan Po Road and Road L781 is also recommended (refer to Figure 4.7 of EIA Report Volume 2).  Due to site constraint, the setback requirement at Area 78E should not be less than 50m from site boundary facing Wan Po Road and junction of Wan Po Road/Road L781.  10m setback from the footpath of Road L781 for Area 78A

 

To reduce traffic noise impact on Area 78 from Wan Po Road

Area 78 / during design stage & operation phase

PlanD

Ö

Ö

Ö

 

TM on EIA Process

 

S4.9.13

3.8.6

-         A 100m long cantilevered barrier (5.5m high vertical barrier with 4 m cantilever length at 45 degrees), located at at-grade Road L861;

-         A 30m long cantilevered barrier (5.5m high vertical barrier with 4.5m cantilever length at 45 degrees), located at-grade Road L861;

-         low noise surfacing on at-grade Road L861 eastbound and westbound (~230m in length) as indicted in figure 4.7 of EIA Report Volume 2.

To reduce traffic noise impact on Area 86 MTRC Development

Area 86 / during design stage & operation phase

Funded & Implemented by CEDD.

Maintained by HyD.

Ö

Ö

Ö

 

TM on EIA Process

 

S4.9.15

3.8.7

10 – 15m setback from the footpath of Chi Shin Street for Planned Area 65B (R2) and Area 65C (OU)

To reduce traffic noise impact on Area 65B & 65C

Area 65B & 65C/ during design stage & operation phase

PlanD

Ö

Ö

Ö

 

 

 

S4.5.14

3.8.12

Two proposed landscape decks over Road P2 near Area 72

To reduce traffic noise impact from Road P2 on Area 72

Area 72/ during design stage & operation phase

Funded & Implemented by CEDD.

Maintained by HyD.

Ö

Ö

Ö

 

TM on EIA Process

 

S4.9.16

3.8.8

Measures such as installation of air conditioning and appropriate window glazing, according to the Class Assessment Document for Standards School by Arch SD, are recommended for the affected school represented by NSRs 65C1 – 65C3, 67S4 – 67S6, 74S1 – 74S6 and school facades at Area 86.

To reduce traffic noise impact on affected NSRs

Affected schools/ during design stage & operation phase

Arch SD

Ö

Ö

Ö

 

TM on EIA Process, Class Assessment Document for Standard Schools

 

S4.9.19

3.8.7

For planned residential and educational institutes and other specified use development, podium, setback from source lines and/ or boundary walls are recommended to alleviate traffic noise impacts.

·       3 m high boundary wall for Educational Institute Areas (Area 67 and Area 74S).

·       14 m setback from the footpath of Tong Chun Street for Area 66 – Site 66D.

·       15 m setback from the footpath of Road L673 for Area 67.

 

To reduce traffic noise impacts on TKO Town Centre South Development

TKO Town Centre South / during the design stage and operation phase

PlanD, Arch SD

Ö

Ö

Ö

 

Class Assessment Document for Standard Schools

 

For WCR

 

 

 

 

 

 

 

 

 

 

S4.9.17

3.8.9

Low noise surfacing material on slip road S2 to S4 and part of Cha Kwo Ling Road, and part of Road A (detail see Figure 4.6)

To reduce traffic noise impact on affected NSRs

Kowloon section of WCR / before operation of WCR

Funded & Implemented by CEDD.

Maintained by HyD.

Ö

Ö

Ö

 

TM on EIA Process

 

S4.9.17

3.8.9

A 210 m long Cantilevered Barrier, 6L2  (6 m high vertical barrier with 3.5 m horizontal  cantilever length), located at the edge of the parapet of the eastbound carriageway of WCR (~ CH 4220 – CH4430)

To reduce traffic noise impact on affected NSRs

Kowloon section of WCR / before operation of WCR

Funded & Implemented by CEDD.

Maintained by HyD.

Ö

Ö

Ö

 

TM on EIA Process

 

S4.9.17

3.8.9

A 105 m long Partial Enclosure (6 m high) for the eastbound carriageway of WCR (CH4430 – CH4535)

 

 

 

 

 

 

 

 

 

S4.9.17

3.8.9

A 285 m long Full Enclosure ( 6 m high) for both carriageways of WCR (CH4435 – CH4720)

 

 

 

 

 

 

 

 

 

S4.9.17

3.8.9

Two 80 m long Cantilevered Barrier, 6L1 (6 m high vertical barrier with 5 m horizontal cantilever length), located at both edges of the parapet of the two carriageways of WCR (CH4720 – CH4800)

 

 

 

 

 

 

 

 

 

S4.9.16

3.8.9

A 40 m long Full Enclosure (6m high ) for both carriageways of WCR (CH4800 – CH4840)

 

 

 

 

 

 

 

 

 

S4.9.17

3.8.9

A 100 m long Full Enclosure (5.5m high) for both carriageways of WCR (CH4900 – CH5000)

 

 

 

 

 

 

S4.9.17

3.8.9

A 460 m long Partial Enclosure (5.5 m high) covering both carriageway, located at the edge of parapet of westbound carriageway of WCR (CH5056 – CH5516)

 

 

 

 

 

 

S4.9.17

3.8.9

A 250 m long Cantilevered Barrier, 5.5L1  (5.5 m high vertical barrier with 3 m cantilever length at 45° to the horizontal), located at the edge of the parapet of the west of the Slip Road EHC 2 (~ CH 070 – CH 320)

 

 

 

 

 

 

 

 

S4.9.17

3.8.9

A 70 m long Cantilevered Barrier,   5.5L2 (5.5 m high vertical barrier with 3.5 m horizontal cantilever length), located at the edge of the parapet of the west of the Slip Road EHC 3 (~ CH 100 – CH 170)

 

 

 

 

 

 

 

 

S4.9.17

3.8.9

A 235 m long partial enclosure (5.5 m high vertical barrier with 3.5 m horizontal cantilever length), located at the edge of the parapet of the west of the Slip Road EHC 3 (~CH 170 – CH405)

 

 

 

 

 

 

 

 

 

S4.9.17

3.8.9

A 7 m high partial enclosure covering both carriageways of Road A (CH 530CH 650) instead of the 130 m long cantilevered barrier (CNB-A) of Road A, which was proposed in the “Feasibility Study for Development at CKL Kaolin Mine Site”

 

 

 

 

 

 

 

 

 

S4.9.17

3.8.9

A 65 m long and 3 m high vertical transparent barrier, with a setback distance (refer to Figure 4.6b of EIA Volume 2) from Cha Kwo Ling Road Roundabout.  The installation of the barrier subject to confirmation from the temple owner, DO and AMO in the implementation stage.

 

 

 

 

 

 

 

 

 

For Road D4 Flyover

 

 

 

 

 

 

 

 

 

S4.9.19

3.8.7

A 200 m long and 3 m high vertical barrier, along the edge of the parapet of the eastbound carriageway of Road D4 Flyover (CH230 – CH430)

To reduce traffic noise impact on affected NSRs

Road D4 Flyover/

Before operation of Road D4 Flyover

 

Funded & Implemented by CEDD.

Maintained by HyD.

Ö

Ö

Ö

 

TM on EIA Process

 

For CBL

 

 

 

 

 

 

 

 

 

 

S4.9.21

3.8.10

For MTRC Area 86 Development, assuming the mitigation measures proposed by the developer to be implemented at the podium along CBL and Road D9, details of proposed barriers and setback is as follows:

·       A 120 m long cantilevered barrier, 5.5L1 (5.5 m high vertical barrier with 3 m cantilever length at 45° to the horizontal), located at the kerb of the eastbound carriageway of CBL (CH 9150 – CH 9270).

·       A 140 m long cantilevered barrier, 5.5L5 (5.5 m high vertical barrier with 1.5 m cantilever length at 45° to the horizontal), located at the kerb of the eastbound carriageway of the Road D9 (CH 9728 – CH 9868).

·       A 100 m long cantilevered barrier, 5.5L4 (5.5 m high vertical barrier with 5 m cantilever length at 45° to the horizontal), located at the central divider of CBL (CH 9300 – CH 9400).

·       A 200 m long cantilevered barrier, 5.5L3 (5.5 m high vertical barrier with 4.5 m cantilever length at 45° to the horizontal), located at the central divider of Road D9 (CH 9500 – CH 9700).

·       A 168 m long cantilevered barrier, 5.5L4 (5.5 m high vertical barrier with 5 m cantilever length at 45° to the horizontal), located at the central divider of Road D9 (CH 9700 – CH 9868).

To reduce traffic noise impact on Area 86 Development  from CBL

CBL / Before operation of CBL

Funded & Implemented by CEDD.

Maintained by HyD.

Ö

Ö

Ö

 

TM on EIA Process

 

For Planned NSRs (Layout have not confirmed during the assessment)

 

 

 

 

 

 

 

 

 

S4.8.2 & Table 4.6

3.8.11

Other than the setback requirements as mentioned above, the following planned residential developments / educational institutes shall fulfill the specified setback requirements.

 

Residential development:

Area 78A, 78C, 78E – 10 m setback from site boundary

Area 66D - 14 m from site boundary

Area 66B & 66C, – 5 m setback from site boundary

Education Institutes:

Area 78 – 10m setback from site boundary

Area 74S – 5m setback from site boundary

 

To reduce traffic noise impact on affected NSRs

Planned Development at Area 78A, 78C, 78E, 66B, 66C, 66D,School at Area 78 & 74S  / During design stage

PlanD (planned residential development) / Arch SD (educational institutes)

Ö

 

 

 

TM on EIA Process

 

4.9.20

3.8.8

Provision of 5m high vertical barrier for Area 73B subject to the results of the Environmental Assessment undertaken by Housing Authority. 

To reduce traffic noise impact on affected NSRs

Housing Development at Area 73B / During design stage

Housing Authority

Ö

 

 

 

 

 

WCR Ventilation Building

 

 

 

 

 

 

 

 

 

S4.9.26

3.8.13

Provision of acoustic silencers for the reversible fans (85m3/s reversible fans & 107 m3/s reversible fans) at WCR Eastern Portal Ventilation Building.

To reduce fixed noise impact on affected NSRs in vicinity of WCR Eastern Portal Ventilation Building

WCR Eastern Portal Ventilation Building / during design stage and construction stage

CEDD

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, O – Operation, and Dec – Decommissioning.


Table C.3      Implementation Schedule for Water Quality Control

EIA Ref #

EM&A Ref

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

 

Des

C

O

Dec

 

Construction Phase

 

 

 

 

 

 

 

 

 

For WCR

 

 

 

 

 

 

 

 

 

 

S5.8.10

S4.7

Silt curtain should be installed around the reclamation site.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.12

S4.7

The maximum permissible production rates of dredging activities should not exceed 1,400 m3/day for Phase 1 reclamation.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.13

S4.7

For filling activities for Phase 1 reclamation, no more than 12 dump cycle should be performed each day.  The maximum volume of filling per dump cycle should not exceed 250 m3.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.14

S4.7

For backfilling using public fill, the maximum fine content of fills should not exceed 5%.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.15

S4.7

For each reclamation phase, core filling activities should be carried out after completion of the seawall of that particular phase.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.16

S4.7

Any gaps that may need to be provided for marine access should be shielded by silt curtains to control sediment plume dispersion away from the site.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.16

S4.7

Filling activities for seawall construction should be carried out behind a silt curtain.

 

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.17

S4.7

Closed-grab dredger should be used for dredging. 

 

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.18

S4.7

Properly maintained closed mechanical grabs should be used for dredging and should be sealed tightly while being lifted.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.17

S4.7

All dredging activities should be carried out behind a silt curtain.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.19

S4.7

All barges and hopper dredgers should be fitted with tight seals to their bottom opening to prevent leakage of materials.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.20

S4.7

The decks of all vessels should be kept tidy and free of oil or other substances that might be accidentally or otherwise washed overboard.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.21

S4.7

Loading of barges and hoppers should be controlled to prevent splashing of dredged materials to the surrounding environment and barges and hoppers should under no circumstances be filled to a level which would cause overflowing of material or sediment laden water during loading and transportation

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.22

S4.7

All barges and dredgers should maintain adequate clearance between vessels and the seabed at all states of the tide and should operate at a reduced speeds to ensure that undue turbidity is not generated by turbulence from vessel movement or propeller wash.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.10.2

S4.2

Water quality monitoring should be carried out at selected stations before and during the proposed marine construction works for WCR Reclamation

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.23

S4.7

It is recommended to conduct the field trial of DCM after completion of the Phase 1 reclamation so that the trial location can take place in a more sheltered location behind the Phase 1 seawall.

Control potential impacts from DCM

Work site/ during design and construction stage

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.24

S4.7

It is recommended that silt curtains should be employed during both the DCM field trial and during full-scale DCM for seawall construction.

Control potential impacts from DCM

Work site/ during design and construction stage

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.24

S4.7

A sand blanket should be placed on top of the mud prior to DCM treatment to avoid seabed sediment disturbance.  The sand fill layer is to be around 1m deep covering the area of DCM treatment.

Control potential impacts from DCM

Work site/ during design and construction stage

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.25

S4.7

It is recommended that the cement slurry injection pressure should be carefully controlled during the DCM process to prevent leaching out of cement slurry and the slurry waste should be either properly disposed outside the site or used for back filling during reclamation after the slurry has solidified.

Control potential impacts from DCM

Work site/ during design and construction stage

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.26

 

S4.2, S4.7

It is recommended to carry out water quality monitoring and audit during the DCM field trial.

Control potential impacts from DCM

Work site/ during design and construction stage

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.26

S4.7

A more detailed water quality assessment should be carried out based on the monitoring data of the field trial.  All these should be summarized in a report to be submitted to EPD and AFCD for approval before starting the DCM operation.

 

 

Control potential impacts from DCM

Work site/ during design and construction stages

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

 

For CBL and CBL/WCR Interchange

 

 

 

 

 

 

 

 

 

S5.8.27

S4.7

All wastewater generated from the piling activities should be collected by a derrick lighter or other collection system and be treated before controlled discharge. Spoil should be collected by sealed hopper barges for proper disposal.

Control potential impacts from marine piling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

S5.8.28

S4.7

Silt curtain should be installed around the marine piling activities to reduce the any impact due accidental release of excavated sediment.

Control potential impacts from marine piling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

 

For the Whole Project (include TCS, TKL, PSK & TKOL Development, WCR, CBL, Road P2 and Road D4 Flyover)

 

 

 

 

 

 

S5.8.32

S4.7

There is a need to apply to EPD for a discharge licence for discharge of effluent from the construction site under the WPCO. The discharge quality must meet the requirements specified in the discharge licence. All the runoff and wastewater generated from the works areas should be treated so that it satisfies all the standards listed in the TM-DSS.  Reuse and recycling of the treated effluent can minimise water consumption and reduce the effluent discharge volume. The beneficial uses of the treated effluent may include dust suppression, wheel washing and general cleaning.

Control potential impacts from construction site effluent

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.29

S4.7

To minimize the potential water quality impacts from construction site runoff and various construction activities, the practices outlined in ProPECC PN 1/94 Construction Site Drainage should be adopted.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.30

S4.7

Surface run-off from construction sites should be discharged into storm drains via adequately designed sand/silt removal facilities such as sand traps, silt traps and sedimentation basins.  Channels or earth bunds or sand bag barriers should be provided on site to properly direct stormwater to such silt removal facilities.  Perimeter channels at site boundaries should be provided where necessary to intercept storm run-off from outside the site so that it will not wash across the site.  Catchpits and perimeter channels should be constructed in advance of site formation works and earthworks.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.31

S4.7

Silt removal facilities, channels and manholes should be maintained and the deposited silt and grit should be removed regularly, at the onset of and after each rainstorm to ensure that these facilities are functioning properly at all times.  Any practical options for the diversion and re-alignment of drainage should comply with both engineering and environmental requirements in order to ensure adequate hydraulic capacity of all drains. Minimum distances of 100 m should be maintained between the discharge points of construction site runoff and the existing TKO saltwater intake.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.33

S4.7

Construction works should be programmed to minimize soil excavation works in rainy seasons (April to September).  If excavation in soil could not be avoided in these months or at any time of year when rainstorms are likely, for the purpose of preventing soil erosion, temporary exposed slope surfaces should be covered e.g. by tarpaulin, and temporary access roads should be protected by crushed stone or gravel, as excavation proceeds.  Intercepting channels should be provided (e.g. along the crest / edge of excavation) to prevent storm runoff from washing across exposed soil surfaces.  Arrangements should always be in place to ensure that adequate surface protection measures can be safely carried out well before the arrival of a rainstorm.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.34

S4.7

Earthworks final surfaces should be well compacted and the subsequent permanent work or surface protection should be carried out immediately after the final surfaces are formed to prevent erosion caused by rainstorms.  Appropriate drainage like intercepting channels should be provided where necessary.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.35

S4.7

Measures should be taken to minimize the ingress of rainwater into trenches. If excavation of trenches in wet seasons is necessary, they should be dug and backfilled in short sections.  Rainwater pumped out from trenches or foundation excavations should be discharged into storm drains via silt removal facilities.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.36

S4.7

Open stockpiles of construction materials (e.g. aggregates, sand and fill material) on sites 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.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.37

S4.7

Manholes (including newly constructed ones) should always be adequately covered and temporarily sealed so as to prevent silt, construction materials or debris from getting into the drainage system, and to prevent storm run-off from getting into foul sewers.  Discharge of surface run-off into foul sewers must always be prevented in order not to unduly overload the foul sewerage system.

 

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.38

S4.7

Good site practices should be adopted to remove rubbish and litter from construction sites so as to prevent the rubbish and litter from spreading from the site area.  It is recommended to clean the construction sites on a regular basis.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.39

S4.7

Under normal circumstances, groundwater pumped out of wells, etc. for the lowering of ground water level in basement or foundation construction, and groundwater seepage pumped out of tunnels or caverns under construction should be discharged into storm drains after the removal of silt in silt removal facilities.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.40

S4.7

Groundwater pumped out during construction of the northern cycle track footbridge and southern footbridge as well as the proposed sewage pumping station for TKO landfill development should be temporarily held in storage tanks on site as the volume is anticipated to be small.  It is recommended that the groundwater should be collected and tankered off site by a licensed wastewater collector for treatment and disposal at TKO PTW.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.40

S4.7

The site investigation works at the detailed design stage of the Project should include groundwater sampling and analysis to determine the composition of groundwater.  The monitoring results of groundwater quality should be submitted to EPD and DSD for their approval.  Should the groundwater quality be found to exceed the TM standard for discharge into foul sewers, suitable treatment and disposal method of contaminated groundwater should be recommended.  It is proposed that a packaged treatment unit be installed at the site should pre-treatment be required.  All the required on-site pre-treatment of the collected groundwater should be implemented to the satisfaction of the EPD.  Sampling should be conducted for the groundwater to ensure that the groundwater quality meets the TM-DSS prior to the discharge of groundwater to the TKO PTW.  Estimate of the volume of groundwater should be made at the detailed design stage based on the site investigation data.

Control potential impacts from construction site runoff and land-based construction

Work site/ during design and construction stages

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

S5.8.41

S4.7

Water used in ground boring and drilling for site investigation or rock / soil anchoring should as far as practicable be recirculated after sedimentation.  When there is a need for final disposal, the wastewater should be discharged into storm drains via silt removal facilities.

Control potential impacts from construction site runoff and land-based construction

Work site/ during design and construction stages

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

S5.8.42

S4.7

Wastewater generated from the washing down of mixing trucks and drum mixers and similar equipment should whenever practicable be recycled.  The discharge of wastewater should be kept to a minimum.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.43

S4.7

To prevent pollution from wastewater overflow, the pump sump of any water recycling system should be provided with an on-line standby pump of adequate capacity and with automatic alternating devices.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.44

S4.7

Under normal circumstances, surplus wastewater may be discharged into foul sewers after treatment in silt removal and pH adjustment facilities (to within the pH range of 6 to 10).  Disposal of wastewater into storm drains will require more elaborate treatment.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.45

S4.7

All vehicles and plant should be cleaned before they leave a construction site to ensure no earth, mud, debris and the like is deposited by them on roads.  A wheel washing bay should be provided at every site exit if practicable and wash-water should have sand and silt settled out or removed before discharging into storm drains.  The section of construction road between the wheel washing bay and the public road should be paved with backfall to reduce vehicle tracking of soil and to prevent site run-off from entering public road drains.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.46

S4.7

Bentonite slurries used in diaphragm wall and bore-pile construction should be reconditioned and reused wherever practicable.  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.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.47

S4.7

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 sewer, storm drains or the receiving waters as set out in the WPCO Technical Memorandum on Effluent Standards.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.48

S4.7

Water used in water testing to check leakage of structures and pipes should be reused for other purposes as far as practicable. Surplus unpolluted water could be discharged into storm drains.

Control potential impacts from construction site runoff and land-based construction

 

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.49

S4.7

Sterilization is commonly accomplished by chlorination.  Specific advice from EPD should be sought during the design stage of the works with regard to the disposal of the sterilizing water.  The sterilizing water should be reused wherever practicable.

Control potential impacts from construction site runoff and land-based construction

Work site/ during design and construction stages

CEDD’s Contractors

Ö

Ö

 

 

EIAO-TM, WPCO

 

S5.8.50

S4.7

Before commencing any demolition works, all sewer and drainage connections should be sealed to prevent building debris, soil, sand etc. from entering public sewers/drains

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.51

S4.7

Wastewater generated from building construction activities including concreting, plastering, internal decoration, cleaning of works and similar activities should not be discharged into the stormwater drainage system.  If the wastewater is to be discharged into foul sewers, it should undergo the removal of settleable solids in a silt removal facility, and pH adjustment as necessary.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.52

S4.7

Acidic wastewater generated from acid cleaning, etching, pickling and similar activities should be neutralized to within the pH range of 6 to 10 before discharging into foul sewers.  If there is no public foul sewer in the vicinity, the neutralized wastewater should be tinkered off site for disposal into foul sewers or treated to a standard acceptable to storm drains and the receiving waters.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.53

S4.7

Wastewater collected from canteen kitchens, including that from basins, sinks and floor drains, should be discharged into foul sewer via grease traps capable of providing at least 20 minutes retention during peak flow.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.54

S4.7

Drainage serving an open oil filling point should be connected to storm drains via a petrol interceptors with peak storm bypass.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.55

S4.7

Vehicle and plant servicing areas, vehicle wash bays and lubrication bays should as far as possible be located within roofed areas.  The drainage in these covered areas should be connected to foul sewers via a petrol interceptor.  Oil leakage or spillage should be contained and cleaned up immediately.  Waste oil should be collected and stored for recycling or disposal in accordance with the Waste Disposal Ordinance.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO, WDO

 

S5.8.56

S4.7

The presence of construction workers generates sewage.  It is recommended to provide sufficient chemical toilets in the works areas.  The toilet facilities should be more than 30 m from any watercourse.  A licensed waste collector should be deployed to clean the chemical toilets on a regular basis.

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.57

S4.7

Notices should be posted at conspicuous locations to remind the workers not to discharge any sewage or wastewater into the nearby environment.  Regular environmental audit on the construction site can provide an effective control of any malpractices and can encourage continual improvement of environmental performance on site.  It is anticipated that sewage generation during the construction phase of the project would not cause water pollution problem after undertaking all required measures.

 

Control potential impacts from construction site runoff and land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.58

S4.7

Contractor must register as a chemical waste producer if chemical wastes would be produced from the construction activities. The Waste Disposal Ordinance (Cap 354) and its subsidiary regulations in particular the Waste Disposal (Chemical Waste) (General) Regulation should be observed and complied with for control of chemical wastes.

Control potential impacts from accidental spillage of chemical

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO, WDO

 

S5.8.59

S4.7

Any service shop and maintenance facilities should be located on hard standings within a bunded area, and sumps and oil interceptors should be provided. Maintenance of vehicles and equipment involving activities with potential for leakage and spillage should only be undertaken within the areas appropriately equipped to control these discharges.

Control potential impacts from accidental spillage of chemical

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.8.60

S4.7

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:

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

·       Chemical waste containers should be suitably labelled, to notify and warn the personnel who are handling the wastes, to avoid accidents.

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

Control potential impacts from accidental spillage of chemical

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO, WDO

 

S5.8.61

S4.7

To minimize the potential water quality impacts from the construction works located at or near any river channels, natural streams or seafront, the practices outlined in ETWB TC (Works) No. 5/2005 “Protection of natural streams/rivers from adverse impacts arising from construction works” should be adopted where applicable.  Relevant mitigation measures are listed below:

·       The proposed works should preferably be carried out within the dry season where the flow in the storm culvert/river channel/stream is low.

·       The use of less or smaller construction plants may be specified to reduce the disturbance to the riverbed.

·       Temporary sewerage system should be designed to prevent wastewater from entering the river, streams and sea.

·       Temporary storage of materials (e.g. equipment, filling materials, chemicals and fuel) and temporary stockpile of construction materials should be located well away from any water courses during carrying out of the construction works.

·       Stockpiling of construction materials and dusty materials should be covered and located away from any water courses.

·       Construction debris and spoil should be covered up and/or disposed of as soon as possible to avoid being washed into the nearby water receivers.

·       Construction activities, which generate large amount of wastewater, should be carried out in a distance away from the waterfront, where practicable.

·       Mitigation measures to control site runoff from entering the nearby water environment should be implemented to minimize water quality impacts.  Surface channels should be provided along the edge of the waterfront within the work sites to intercept the runoff.

·       Construction effluent, site run-off and sewage should be properly collected and/or treated.

·       Any works site inside the storm water courses should be temporarily isolated, such as by placing of sandbags or silt curtains with lead edge at bottom and properly supported props to prevent adverse impact on the storm water quality.

·       Silt curtain should be installed around the construction activities for the proposed landing steps at the seafront of TCS to minimize the potential impacts due to accidental spillage of excavated materials.

·       Proper shoring may need to be erected in order to prevent soil/mud from slipping into the storm culvert/river/stream/sea.

·       Supervisory staff should be assigned to station on site to closely supervise and monitor the works.

Control potential impacts from construction works located at or near any storm culverts or in close proximity of inland water or seafront

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

S5.10.2

S4.7

Monitoring of the discharge quality of effluent from land-based construction sites should be conducted. 

 

 

 

 

Control potential impacts from Land-based construction

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

Operational Phase

 

 

 

 

 

 

 

For TCS, TKL, PSK & TKOL Development

 

 

 

 

 

 

 

S5.8.2

S4.7

It is recommended to divert all storm discharges from Catchment M and 60% of the total discharges from Catchment L to the southern boundary of TCS.

Reduce water quality impact on the EDC

EDC / during construction

Contractor, CEDD

 

 

Ö

 

EIAO-TM, WPCO

S5.8.3

S4.3, S4.7

It is recommended to conduct water quality field survey at EDC after the proposed drainage diversion works is completed to confirm the suitability of the proposed recreation uses at EDC.   The field survey should be conducted at a frequency of twice per year in dry season and wet season respectively after operation of the drainage diversion works.  The suitability of the proposed recreation uses at EDC should be continuously reviewed with reference to the field survey data.  After a 3-year operation period, a review should be conducted to determine whether the field survey programme should be discontinued. 

Safeguard users of secondary contact recreation zone in EDC and Junk Bay

EDC / post-project period

DSD or future operator of the secondary contact recreation zone

 

 

Ö

 

EIAO-TM, WPCO

S5.8.3

S4.3, S4.7

The proposed secondary contact recreation zone in EDC and Junk Bay should be closed in any event of emergency sewage bypass. It is recommended that relevant government departments including EPD and LCSD shall be informed by DSD as soon as possible of any emergency bypass so that appropriate actions can be taken to prevent any water sports activities to be carried out in EDC and Junk Bay.  The Plant operators shall maintain good communications with various concerned parties.  A list of address, email address, phone and fax number of key persons in relevant departments responsible for action shall be made available to the plant operators.  Water quality monitoring should be carried out by DSD to determine when conditions are suitable for re-opening of the EDC and Junk Bay for recreational purposes.

Safeguard users of secondary contact recreation zone in EDC and Junk Bay

EDC and Junk Bay / In any event of emergency sewage bypass

DSD, EPD, LCSD, future operator of the secondary contact recreation zone

 

 

Ö

 

EIAO-TM, WPCO

S5.8.5

S4.7

All cleansing effluent generated from the proposed Pak Shing Kok high level fresh water service reservoir should be collected by a licensed waste collector for proper disposal and should not be discharged into the nearby water environment.

Control potential impacts from reservoir cleansing

Pak Shing Kok high level fresh water service reservoir

WSD

 

 

Ö

 

EIAO-TM, WPCO

S5.8.6

S4.7

The emergency bypass location of the sewage pumping station for the recreational development at TKO landfill should be designed to be located 500 m away from the TKO saltwater intake.  A standby pump should be provided to minimize the potential water quality impact from sewage overflow.

Control potential impacts from the emergency bypass

Sewage pumping at TKO landfill / during design and operation stage

CEDD

Ö

 

Ö

 

EIAO-TM, WPCO

S5.8.8

S4.7

For handling, treatment and disposal of other operational stage effluent, the practices outlined in ProPECC PN 5/93 should be adopted where applicable.  The following relevant recommendations should be followed:

·       Drainage outlets provided in open areas and areas subjected to a substantial amount of wind-blown rain, including open carparks, balconies, podiums, yards, etc., should be connected to storm drains.

·       Drainage outlets provided in covered areas, including covered podiums and other roofed areas, should be discharged to foul sewers.

·       Subsoil drains of slopes, road embankments and earth retaining structures, and groundwater collection drains for basements, subways and tunnels, and similar drains, should under normal circumstances, be connected to storm water drains.  Silt removal facilities should be provided where necessary.  A separate drainage system that connects to foul sewers should be provided to collect wastewater from basements, subways and tunnels and similar areas.

·       Drainage serving the proposed open lorry park should be connected to storm water drains via a petrol interceptor that would allow storm water bypass during peak flow periods.

·       Drainage serving any covered carparks should be connected to foul sewers via petrol interceptors.

·       To prevent hazards from sewage overflowing from the proposed pumping station for handling sewage arising from TKO landfill site, sewage pump sumps should be provided with a standby pump whose capacity should not be less than any of the duty pumps, and duty pumps should not be required to operate more than 10 on-off cycles per hour.

·       Surface water drainage should be provided for discharging storm water off slopes and from open surfaces.  Such drainage as normally collected in open surface channels should be led to storm water drains via silt removal facilities.  Runoff in kerb gutters of roads or channels of building platforms should pass through a gully pit with necessary gratings to prevent objects from entering the storm water drains.

 

Control potential impacts from operational stage

Within Project Site/ during design and operation stage

Various

Ö

 

Ö

 

EIAO-TM, WPCO

S5.8.9

S4.7

For maintenance of stormwater drainage system, reference should be made to Environment, Transport and Works Bureau (ETWB) Technical Circular (Works) No. 14/2004 “Maintenance of Stormwater Drainage Systems and Natural Watercourses” where applicable.

Control potential impacts from operational stage

Within Project Site/ during operation stage

DSD

 

 

Ö

 

EIAO-TM, WPCO

For WCR

 

 

 

 

 

 

 

 

 

 

S5.8.7

S4.7

Sewage generated form the site would be collected in holding tank and transferred by lorry to TKO Preliminary Treatment Works (PTW) for treatment.  Transfer of sewage should be arranged within office hours of the TKO PTW to facilitate normal plant operators. The proposed sewage tankering away services should be provided on a regular basis to prevent any discharge of sewage to the nearby storm system. If the future operator of the administration building changes the sewage disposal scheme, using either a pumping scheme or a small treatment plant due to change of development parameter, the proposed holding tank could still be used to withhold the raw sewage in case of emergency.

Control potential impacts from operational stage

WCR toll plaza / during operation

Transport Department /

Future Operator of Administration Building

 

 

Ö

 

EIAO-TM, WPCO

 

# 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, O – Operation, and Dec - Decommissioning

 


Table C.4      Implementation Schedule for Terrestrial Ecological Impact

EIA Ref #

EM&A Ref

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

Des

C

O

Dec

For the Whole Project (include TCS, TKL, PSK & TKOL Development, WCR, CBL, Road P2 and Road D4 Flyover)

 

 

 

 

 

S7.8.5

 

Developments proposed under this Project would have the potential to directly impact two plant species of conservation interest; Small Persimmon (Diospyros vaccinioides) in the E-WCR Assessment Area, and Bamboo Orchid (Arundina chinensis) in the PSK Assessment Area. Affected individuals of these species should be transplanted to suitable nearby habitats prior to the construction phase. Transplantation should be conducted by a suitably qualified botanist/horticulturalist. A detailed transplantation methodology should be formulated during the detailed design stage for this Project.

Protect plant species of conservation interest

Works areas/ prior to construction

Botanist/ horticulturalist appointed by CEDD

Ö

Ö

 

 

-

S7.8.6

 

Standard good site practice measures should be implemented throughout the construction phase. The measures should include:

 

·     Placement of equipment or stockpile in designated works areas and access routes selected on existing disturbed land to minimise disturbance to natural habitats.

·     Construction activities should be restricted to work areas that should be clearly demarcated. The work areas should be reinstated after completion of the works.

·     Waste skips should be provided to collect general refuse and construction wastes. The wastes should be disposed of timely and properly off-site.

·     General drainage arrangements should include sediment and oil traps to collect and control construction site run-off.

·     Open burning on works sites is illegal, and should be strictly prohibited.

Minimise disturbance impacts.

Works areas/ construction phase

CEDD’s Contractors

 

Ö

 

 

-

S7.8.7

 

Construction and operation phase disturbance impacts are expected to be relatively minor in all three Assessment Areas. Nevertheless, measures should be implemented to minimise potential disturbance where possible, particularly during the construction phase. The following measures are recommended:

·     Use of Quiet Mechanical Plant during the construction phase should be adopted wherever possible.

·     General measures to reduce noise generated during the construction phase (as outlined in Section 4.8.5 of the Report) should be effectively implemented.

·     Hoarding or fencing should be erected around the works area boundaries during the construction phase. The hoarding would screen adjacent habitats from construction phase activities, reduce noise disturbance to these habitats and also to restrict access to habitats adjacent to works areas by site workers.  The use of hoarding/fencing would be of most importance in the E-WCR and PSK Assessment Areas, where it would reduce disturbance to moderate-high ecological value secondary woodland and moderate ecological value stream habitats.

Minimise disturbance impacts.

Works areas/ construction phase

CEDD’s Contractors

 

Ö

 

 

-

S7.8.13

 

The implementation of mitigation measures detailed in Section 11 of EIA Report Volume 1 would minimise impacts to habitats adjacent to works areas resulting from improper storage of materials or dumping of waste. 

Minimise impacts resulting from storage/ dumping

Works areas/ construction phase

CEDD’s Contractors

 

Ö

 

 

-

S7.8.14

 

Measures to control dust emissions during the construction phase such as regular spraying of haul roads should be implemented to minimise impacts to adjacent vegetation and habitats. Further details of measures to minimise dust and air quality impacts resulting from the proposed development are presented in Section 3 of EIA Report Volume 1

Minimise dust emissions

Works areas/ construction phase

CEDD’s Contractors

 

Ö

 

 

-

S7.8.15

 

Measures to control potential sedimentation/water quality impacts during the construction phase should be implemented. Such measures are detailed in Section 5 of EIA Report Volume 1, and should include:

·     To minimize sedimentation and soil erosion, soil excavation should be scheduled for the dry season where practicable. Exposed areas of soil should be covered with tarpaulin or other material to minimize potential sedimentation.

·     Interceptor channels should be constructed around the boundaries of works areas to collect site run-off. Run-off should be routed through silt traps/oil interceptors before being discharged.

·     Adequate toilet facilities should be provided for site workers.

 

Minimise sedimentation/ water quality impacts

Works areas/ construction phase

CEDD’s Contractors

 

Ö

 

 

-

S7.8.16

 

During the operation phase, it is recommended that all stormwater drainage from Residential Developments at Area 78 is routed through silt traps and oil interceptors prior to discharge into the PSK Stream.

Minimise sedimentation/ water quality impacts

Development Area 78/ operation phase

CEDD

 

Ö

 

 

-

S7.8.17

 

A tree survey should be conducted to identify any mature trees potentially affected by the proposed works. Any felling of mature trees should be compensated for through planting of standard or heavy standard trees. Compensatory planting should be provided on at least a 1:1 ratio.

Mitigate tree felling

Works areas/ design, construction phase

CEDD

Ö

Ö

 

 

-

S7.8.18

 

Landscaping works on reclaimed land, newly created slopes and roadsides should incorporate native plant species that are attractive to wildlife (e.g., trees producing flowers/fruits that attract avifauna and insects).

 

 

Increase ecological value of landscaped areas

Works areas/ construction phase

CEDD’s Contractors

 

Ö

 

 

-

For WCR

 

 

 

 

 

 

 

 

 

 

S7.8.8

 

Adequate fencing/hoarding should be erected around works areas close to the E-WCR Stream during the construction phase. The hoarding/fencing would prevent and minimise disturbance from site workers, the dumping/storage of materials close to the Stream and potential accidental spillage of pollutants into the Stream.

Minimise impacts to Neon Goby

Works areas/ construction phase

CEDD’s Contractors

 

Ö

 

 

-

S7.8.9

 

It is recommended that adult Philippine Neon Gobies are captured from the E-WCR Stream and transferred to fish tanks prior to the start of the construction phase. In this way, the habitat conditions of the fishes can be closely monitored and controlled, thereby maximising the probability of their survival. Following the completion of Phase I Reclamation Works, the fish would be re-introduced into the preserved E-WCR Stream.

Minimise impacts to Neon Goby

Works Areas/ design and construction phase

Ecologist appointed by CEDD.

Ö

Ö

 

 

-

S7.8.10

 

Detailed methodologies for the capture and maintenance of adult Philippine Neon Gobies from the E-WCR Stream should be drafted during the detailed design stage of the Project.

Minimise impacts to Neon Goby

n.a./design phase

Ecologist appointed by CEDD.

Ö

 

 

 

-

S7.8.11

 

The design of reclamation works for the WCR have been considered to maintain the connection between the E-WCR Stream and marine habitats. The alignment of the reclamation would avoid an area of marine habitat at the base of the E-WCR Stream. This area would in turn be connected to Junk Bay via a large pipe (2.5m in diameter) running underneath the proposed reclamation for the remainder of the construction phase. A permanent culvert of similar size would be constructed to replace the pipe during operation.

Minimise impacts to Neon Goby

WCR reclamation/ construction phase

CEDD’s Contractors

 

Ö

 

 

-

S7.8.12 &

S7.10.3

 

Further surveys of the E-WCR stream should be conducted 1-2 years before construction works commence. The surveys should record the number of Philippine Neon Gobies present in the Stream. At least four surveys should be conducted, covering both the wet and dry seasons. The requirement for construction phase mitigation measures to minimize impacts to Philippine Neon Gobies should be reviewed based on the findings of these surveys.

Minimise impacts to Neon Goby

WCR reclamation / design phase

Ecologist appointed by CEDD.

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, O – Operation, and Dec - Decommissioning

 


Table C.5      Implementation Schedule for Marine Ecological Impact

EIA Ref #

EM&A Ref

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

Des

C

O

Dec

For WCR

 

 

 

 

 

 

 

 

 

 

S8.8.3 & S8.10.2

 

The feasibility of transplanting potentially impacted hard corals from the reclamation area to suitable nearby habitats is investigated during the detailed design stage of the Project. To achieve this aim, surveys of the proposed reclamation area should be conducted during the detailed design stage, at least 8 months prior to the start of the construction phase. These surveys should focus on identifying and mapping hard corals that would be suitable for transplantation (i.e., corals encrusting small boulders of a manageable size that can be moved by divers with lifting aids). If corals suitable for transplantation are identified during these surveys, a detailed transplantation methodology (including monitoring of transplanted corals) should be drafted during the detailed design stage of the Project.

Minimise impacts to corals

WCR Reclamation area/ design/ construction phase

Marine ecologist appointed by CEDD.

Ö

Ö

 

 

 

S8.8.4

 

During construction phase for Phase I reclamation, mitigation measures used to control water quality (e.g. deployment of a silt curtain and reduced dredging rate as presented in Section 5) would serve to protect corals in proximity to the reclamation to acceptable levels. Construction methods for reclamation would involve filling within enclosed areas behind seawalls with no dredging required for Phase II and Phase III of the WCR reclamation. These construction methods are expected to result in no substantial water quality or marine ecological impacts. Nevertheless, silt curtains would be deployed and other measures implemented to minimise any potential water quality impacts during these works.

 

Minimise impacts to corals

WCR/

Construction phase

 

CEDD’s Contractors

 

Ö

 

 

 

S8.8.5

 

Mitigation is recommended to prevent potentially lethal direct impacts of construction activities on individual Grassy Puffers, if found stranded in rock pools within the works area. It is recommended that the rock pool is visited after each spring tide (i.e. about every 2 weeks) during the construction phase of the WCR reclamation until the shore is no longer available due to filling associated with the Project. Any puffers present in the pool should be captured and transferred to a temporary holding tank. Captured fish should be returned to the sea outside the project works boundary. Owing to their defence mechanism of self-inflating, particular care should be employed when capturing and releasing the puffer fish (i.e. keeping the fish submerged in water at all times to prevent gulping of air, which could be lethal). Details of mitigation plans to rescue stranded puffers should be drafted at the detailed design stage.

Minimise impacts to Puffer Fish

WCR/

Design and Construction phase

CEDD’s Contractors

Ö

Ö

 

 

 

S8.8.7

 

To provide suitable substrata for recolonisation by corals, the seawall of the proposed WCR was recommended to be of a rubble mound design. Elsewhere in Hong Kong seawall habitat have been found to be suitable to support coral growth. The rubble mound seawall consisting of haphazardly arranged boulders is expected to provide a large amount of hard substrata and increased surface areas for settlement and recruitment of coral assemblages similar to those previously recorded from this coast.

Compensate for loss of rocky shore and hard sub-tidal substrate.

WCR/

Construction phase

CEDD

Ö

 

 

 

 

S8.10.3

 

No unacceptable adverse impact on the medium value coral sites within Junk Bay are anticipated. Nevertheless, EM&A for these coral sites during dredging works for Phase I of the WCR reclamation is recommended. Details of EM&A requirements are provided in the EM&A Manual which includes parameters for monitoring the health and condition of corals during dredging works of the Project and management actions and supplemental mitigation measures should impacts arise. Overall, EM&A would serve the purpose of protecting coral sites in Junk Bay and ensuring the environmental acceptability of the Project.

Protecting coral sites in Junk Bay

WCR/ Construction phase

Marine ecologist appointed by CEDD.

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, O – Operation, and Dec - Decommissioning

 

Table C.6      Implementation Schedule for Fisheries

EIA Ref#

EM&A Ref

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

Des

C

O

Dec

For WCR and CBL

 

 

 

 

 

 

 

 

 

S9.6.2

 

Dredging, reclamation and marine construction activities incorporate constraints that serve as appropriate mitigation to control environmental impacts within acceptable levels.  Since no unacceptable adverse impacts on fisheries are predicted, there would be no need for fisheries-specific mitigation measures.  The mitigation measures recommended in Section 5 of this EIA Report for controlling water quality would serve also to protect fisheries from indirect impacts and ensure no unacceptable impact on fisheries resources and operations.

Control potential impacts from dredging and filling activities

Work site/ during construction

CEDD’s Contractors

 

Ö

 

 

EIAO-TM, WPCO

 

# 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, O – Operation, and Dec - Decommissioning


Table C.7      Implementation Schedule for Landscape and Visual Impact 

EIA Ref #

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

Des

C

O

Dec

 

Construction

S10.7

S10.8

CM1 - The construction area and contractor’s temporary works areas should be minimized to avoid impacts on adjacent landscape, including minimization of impacts on natural slopes.

Minimize effects of landscape and visual impacts

Works site / during construction

CEDD’s Contractors

 

Ö

 

 

EIAO TM

ETWBC 14/2002

ETWBC 2/2004

LAO1 D12

S10.7

S10.8

CM2 - Topsoil, where identified, should be stripped and stored for re-use in the construction of the soft landscape works, where practical.  The Contract Specification shall include storage and reuse of topsoil as appropriate.

Minimize effects of landscape and visual impacts

Works site / during construction

CEDD’s Contractors

Ö

Ö

 

 

EIAO TM

S10.7

S10.8

CM3 - The potential for soil erosion should be reduced by minimizing the extent of vegetation disturbance on site and by providing a protective cover (e.g. plastic sheeting or a grass cover established by hydroseeding) over newly exposed soil.

Minimize effects of landscape and visual impacts

Works site / during construction

CEDD’s Contractors

 

Ö

 

 

EIAO TM

S10.7

S10.8

CM4 - All existing trees shall be carefully protected during construction.  Detailed Tree Protection Specification shall be provided in the Contract Specification. Under this specification, the Contractor shall be required to submit, for approval, a detailed working method statement for the protection of trees prior to undertaking any works adjacent to all retained trees, including trees in contractor’s works areas.

Minimize effects of landscape and visual impacts

Works site / during construction

CEDD’s Contractors

Ö

Ö

 

 

EIAO TM

ETWBC 14/2002

ETWBC 2/2004

LAO1 D12

 

S10.7

S10.8

CM5 - Trees unavoidably affected by the works shall be transplanted where practical.   A detailed Tree Transplanting Specification shall be provided in the Contract Specification, if applicable. Sufficient time for necessary tree root and crown preparation periods shall be allowed in the project programme.

Minimize effects of landscape and visual impacts

Works site / during construction

CEDD’s Contractors

Ö

Ö

 

 

EIAO TM

ETWBC 14/2002

ETWBC 2/2004

LAO1 D12

 

S10.7

S10.8

CM6 - Control of night time lighting

Minimize effects of landscape and visual impacts

Works site / during construction

CEDD’s Contractors

 

Ö

 

 

EIAO TM

S10.7

S10.8

CM7 - Use of decorative screen hoarding

Minimize effects of landscape and visual impacts

Works site / during construction

CEDD’s Contractors

 

Ö

 

 

EIAO TM

S10.7

S10.8

CM8 - Minimisation of impact on natural coastline

Minimize effects of landscape and visual impacts

Works site / during construction

CEDD’s Contractors

Ö

Ö

 

 

EIAO TM

 

Operation

 

 

 

 

 

 

 

 

S10.7

S10.8

OM1 - Stepped building height profile

Minimize effects of landscape and visual impacts

TCS / during construction and operation

PlanD, TPB or DLO

Ö

Ö

Ö

 

EIAO TM

TPO

S10.7

S10.8

OM2 - Network of open spaces linking residential areas of TKO and Tiu Keng Leng with the waterfront, Town Park and Landfill area.  The network should continue along the waterfront to form a continuous, uninterrupted link

Minimize effects of landscape and visual impacts

TCS and TKL / during construction and operation

Funded & Implemented by LCSD. Maintained by LCSD and other Govt Depts in accordance with ETWBTC 2/2004

Ö

Ö

Ö

 

EIAO TM

TPO

ETWBTC 2/2004

S10.7

S10.8

OM3 - Sensitive architectural design of elevated and built structures, including paved surfaces, retaining walls, columns, buildings, and other structures on Road P2, Western Coast Road and Cross Bay Link with particular regard to form and finishes.  ACABAS approval shall be required.

Minimize effects of landscape and visual impacts

Road P2,WCR, CBL / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD.

Ö

Ö

Ö

 

EIAO TM

ACABAS

S10.7

S10.8

OM4 - Sensitive integration of road embankments with surrounding ground level.

Minimize effects of landscape and visual impacts

WCR, CBL and Road P2 / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD.

Ö

Ö

Ö

 

EIAO TM

ETWBC 2/2004

 

 

S10.7

S10.8

OM5 - Lighting of roads and bridges should be designed to minimize glare to all receivers. Poles and fittings should be designed to conform with the bridge design and subject to ACABAS approval.

Minimize effects of landscape and visual impacts

WCR, CBL and Road P2 / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD.

Ö

Ö

Ö

 

EIAO TM

ACABAS

S10.7

S10.8

OM6 - Size and extent of noise barriers and enclosures should be reduced as much as possible.  Where noise barriers are unavoidable, sensitive architectural styling and chromatic treatment of the noise barriers is important in minimizing their visual impact on motorist and in elevated views from surrounding residential receivers.  The advice from ACABAS should be fully incorporated.

Minimize effects of landscape and visual impacts

Works site / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD.

Ö

Ö

Ö

 

EIAO TM,

ACABAS

S10.7

S10.8

OM7 - Sensitive hard landscape design along roadsides, with particular regard to the creation of an attractive and user-friendly pedestrian environment.

Minimize effects of landscape and visual impacts

Works site / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD.

Ö

Ö

Ö

 

EIAO TM

ETWBC 2/2004

 

S10.7

S10.8

OM8 - The two deck-overs over Road P2 should be designed as attractive landscape decks.  Structural design of the deck should allow for adequate soil depth to permit tree planting (1.5m min).  The appropriate maintenance agencies shall be involved in the approval of the design of the deck-over.

Minimize effects of landscape and visual impacts

Road P2 / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD, LCSD and other Govt Depts in accordance with ETWBTC 2/2004

Ö

Ö

Ö

 

EIAO TM

ETWBC 2/2004

ETWBC 25/92

 

S10.7

S10.8

OM9 - Attractive design of pedestrian subways and bridges, including murals.  ACABAS approval shall be required.

Minimize effects of landscape and visual impacts

TKL and TCS / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD.

Ö

Ö

Ö

 

EIAO TM

ACABAS

ETWBTC 2/2004

S10.7

S10.8

OM10 - Tree, shrub and climber planting adjacent to roads and structures with particular regard to softening and screening of roads and noise barriers in low level views from adjacent areas.  Provision of shade trees along footpaths, and climbing plants against abutment walls and viaduct columns.

Minimize effects of landscape and visual impacts

Works site / during construction and operation

Funded & Implemented by CEDD. Maintained by LCSD and other Govt Depts in accordance with ETWBTC 2/2004

Ö

Ö

Ö

 

EIAO TM

ETWBC 25/92

ETWBTC 2/2004

 

S10.7

S10.8

OM11 - Woodland/amenity tree and shrub planting should be implemented adjacent to the Western Coast Road where it is at grade. This will include cut and fill slopes.

Minimize effects of landscape and visual impacts

WCR / during construction and operation

Funded & Implemented by CEDD. Maintained by LCSD and / or AFCD and other Govt Depts in accordance with ETWBTC 2/2004

Ö

Ö

Ö

 

EIAO TM

ETWBC 2/2004

 

S10.7

S10.8

OM12 - Any unavoidable geotechnical works for slope stabilization should employ methods causing minimal visual intrusion, such as some types of soil nailing.  Sprayed concrete finishes must not be used where viable alternatives are available.  Cut slopes shall be planted with woodland trees and shrubs to compensate for vegetation lost during construction.  Where rock cut slopes are created bio-engineering techniques shall be used to reduce their visual impact.

Minimize effects of landscape and visual impacts

WCR / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD, LCSD and other Govt Depts in accordance with ETWBTC 2/2004

Ö

Ö

Ö

 

EIAO TM

GEO 1/2000

ETWBC 2/2004

 

S10.7

S10.8

OM13 - Non-invasive climbing plants should be used to soften the appearance of viaduct columns at ground level.

Minimize effects of landscape and visual impacts

WCR, CBL and Road P2 / during construction and operation

Funded & Implemented by CEDD. Maintained by LCSD and other Govt Depts in accordance with ETWBTC 2/2004

Ö

Ö

Ö

 

EIAO TM

ETWBC 2/2004

 

S10.7

S10.8

OM14 – Predominantly native shrub planting should be undertaken to screen the proposed works and blend it into the landscape where appropriate

Minimize effects of landscape and visual impacts

PSK and WCR / during construction and operation

Funded & Implemented by CEDD. Maintained by LCSD and / or other Govt Depts in accordance with ETWBTC 2/2004

Ö

Ö

Ö

 

EIAO TM

ETWBC 2/2004

 

S10.7

S10.8

OM15 - Tree, planting along roadside amenity strips and central dividers to provide structure planting for the townscape.

Minimize effects of landscape and visual impacts

Works site / during construction and operation

Funded & Implemented by CEDD. Maintained by LCSD and / or other Govt Depts in accordance with ETWBTC 2/2004

Ö

Ö

Ö

 

EIAO TM

ETWBTC 2/2004

ETWBC 25/92

 

S10.7

S10.8

OM16 - Sensitive architectural design to the toll plaza buildings should be implemented to reduce their visual impact and make them compatible with the surrounding coastal environment.  This is to include the use of clay tiles of a dark earth-tone colour that harmonises with the local landscape context to provide texture and pattern to building surfaces as well as helping to minimize any visual impact

Minimize effects of landscape and visual impacts

WCR / during construction and operation

Funded & Implemented by CEDD. Maintained by HyD

Ö

Ö

Ö

 

EIAO TM

ACABAS

S10.7

S10.8

OM17 – The massing of new building developments should provide for breezeways in accordance with the current approved Outline Development Plans.

Minimize effects of landscape and visual impacts

TCS / during construction and operation

Implemented by PlanD/TPB & DLO

Ö

Ö

Ö

 

EIAO TM

TPO

Lease Conditions

# 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, O – Operation, and Dec - Decommissioning


Table C.8      Implementation Schedule for Waste Management Implications

EIA Ref #

EM&A Ref

Environmental Protection Measures/Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location/ Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

Des

C

O

Dec

For WCR

 

 

 

 

 

 

 

 

 

S11.6.3

 

Dredged Marine Sediments

During transportation and disposal of the dredged marine sediments, the following measures should be taken to minimise potential impacts on water quality:

·       Bottom opening of barges shall be fitted with tight fitting seals to prevent leakage of material. Excess material shall be cleaned from the decks and exposed fittings of barges and hopper dredgers before the vessel is moved.

·       Monitoring of the barge loading shall be conducted to ensure that loss of material does not take place during transportation.

·       Transport barges or vessels shall be equipped with automatic self-monitoring devices as specified by the DEP.

·       Barges or hopper barges shall not be filled to a level that would cause the overflow of materials or sediment-laden water during loading or transportation

 

To minimize potential impacts on marine water quality

WCR Phase 1 Reclamation / During the construction period

CEDD’s Contractors

 

Ö

 

 

ETWB TCW No. 34/2002

For the Whole Project (include TCS, TKL, PSK & TKOL Development, WCR, CBL, Road P2 and Road D4 Flyover)

 

 

 

 

 

S11.6.4

 

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 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 ensure proper waste management

Work site / During the construction period

CEDD’s Contractors

 

Ö

 

 

Waste Disposal Ordinance (Cap.54)

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

S11.6.5

 

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

·       Encourage collection of aluminium cans by individual collectors 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

Work site / During the construction period

CEDD’s Contractors

Ö

Ö

 

 

WBTC No.4/98, 5/98

S11.6.7

 

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.

To ensure proper management of general refuse

Work site / During the construction period

CEDD’s Contractors

 

Ö

 

 

Public Health and Municipal Services Ordinance (Cap. 132)

S11.6.8

 

Construction and Demolition Material

 

·    In order to minimise the impact resulting from collection and transportation of C&D material for off-site disposal, the C&D material from the excavation works for road formation and engineering infrastructure should be reused on-site as backfilling material as far as practicable.  In addition, granitic rock generated from the tunnelling works for WCR should be exported for recycling for aggregate.

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

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

·    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 should be included. One may make reference to ETWB TCW No.31/2004 for details.

 

To ensure proper management of C&D material

 

Work site / During the construction period

CEDD’s Contractors

 

Ö

 

 

ETWB TCW No.34/2002

S11.6.9

 

Chemical Wastes

 

If chemical wastes are produced at the construction site, the 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 chemical 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, to either the Chemical Waste Treatment Centre at Tsing Yi, or another licensed facility, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation

To ensure proper management of chemical waste

Work site / During the construction period

CEDD’s Contractors

 

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, O - Operation and Dec – Decommissioning


Table C.9      Implementation Schedule for Cultural Heritage 

EIA Ref#

EM&A Ref

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

Des

C

O

Dec

For CBL

 

 

 

 

 

 

 

 

 

S13.6.2

 

Marine Archaeology

A visual diver survey is recommended to be undertaken during the detailed design stage of the Project.  The diver survey should include:

·       A series of transect dives along the western shore which was not covered by the marine geophysical survey.

·       Circular searches on Target 1 as shown in Figure 13.1 of EIA Report Volume 2.

To ascertain the archaeological potential of Target 1 and the areas to be reclaimed but not covered under the marine geophysical survey

Target 1 and the areas to be reclaimed but not covered under the marine geophysical survey / Before commencement of construction period

CEDD’s Contractors

Ö

 

 

 

Guidelines for MAI

For WCR

 

 

 

 

 

 

 

 

 

S13.6.4

 

Built Heritage

·       A temporary fenced off buffer zone with allowance for public access (minimum 1 m) should be provided around the Cha Kwo Ling Tin Hau temple and Law Mansion. 

·       Monitoring of the vibration impacts should be conducted when the construction works are less than 50m from the temple and the mansion.

To prevent the damage of Cha Kwo Ling Tin Hau temple and Law Mansion 

Worksite / During construction period

CEDD’s Contractors

 

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, O – Operation, and Dec - Decommissioning


Table C.10    Implementation Schedule for Landfill Gas Hazard

EIA Ref #

EM&A Ref

Environmental Protection Measures / Mitigation Measures

Objectives of the Recommended Measures & Main Concerns

Location / Timing

Implementation Agent

Implementation Stages*

What requirements or standards for the measure to achieve

Des

C

O

Dec

For the Whole Project

 

 

 

 

 

 

 

 

S14.60

 

All personnel who work on the site and all visitors to the site should be aware of the possibility of ignition of gas in the confined spaces such as manholes, chambers and excavations.  Safety notices should be displayed at prominent position around the site.  Adequate fire extinguisher equipment and fire resistant clothing should be made available on site.

Safety & Health of the workers

Work site within 250m consultation zone/ During the construction period

CEDD’s Contractors

 

Ö

 

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97) & Code of Practice on Safety and Health at Work in Confined Space

S14.60

 

Service runs within the consultation zone should be designated as “special routes” and utilities companies should be informed of this and should implement precautionary measures

Safety & Health of the workers

Work site within 250m consultation zone/ During the construction period

CEDD’s Contractors

 

Ö

 

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97) & Code of Practice on Safety and Health at Work in Confined Space

S14.60

 

Precautionary measures to minimize landfill gas hazard on-site:

·       No smoking or burning should be allowed.

·       Training should be given to all relevant construction workers.

·       No worker shall work alone at any time in the confined space or any excavation trenches

·       Construction equipment shall be equipped with a vertical exhaust at least 0.6 m above ground level and /or with apark arrestors

·       Permit to Work procedures to be adopted for welding, flame cutting or other hot works in trenches or confined spaces

·       Close all valves immediately after piping assembly or conducting construction.

·       Routine monitoring should be conducted in all excavations to ensure the works area to be free of landfill gas before any man enters the area.

Safety & Health of the workers

Work site within 250m consultation zone/ During the design and construction period

CEDD’s Contractors

Ö

Ö

 

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97)

S14.60

 

Where there are any temporary site offices, or any equipment stores and mess rooms which have enclosed spaces with the capacity to accumulate landfill gas, then they should either:

·       be located on an area which has been proven to be free of landfill gas (by survey with portable gas detectors) and monitored manually by the Safety Officer or an approved and appropriately qualified person to ensure that hazardous concentration of landfill gas does not occur; or

·       be raised clear of the ground with a minimum clear separation (as measured from the highest point on the ground surface to the underside of lowest floor joist) of 500mm.

Safety & Health of the workers

Work site within 250m consultation zone/ During the design and construction period

CEDD’s Contractors

Ö

Ö

 

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97)

S14.60

 

Portable gas detectors should be used to regularly check the levels of methane, carbon dioxide and oxygen in depressions, trenches and other excavations.   Minimum frequency would be twice a day (e.g. the morning before site works commence and after the lunch break) during all excavation works.

Safety & Health of the workers

Work site within 250m consultation zone/ During the construction period

CEDD’s Contractors

 

Ö

 

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97)

S14.60

 

If elevated LFG level is measured during monitoring at depressions trenches and other excavations, ventilation of such excavations should be taken place and sources of ignition should be kept away from areas where build-up of gas is possible.

Safety & Health of the workers

Work site within 250m consultation zone/ During the construction period

CEDD’s Contractors

 

Ö

 

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97)

S14.61

 

Procedures should be established for pre-entry monitoring for ducts, manholes, and chambers in accordance with the requirements of the Factories and Industrial Undertaking (Confined Spaces) Regulation, where applicable.  Training should be provided to all the maintenance workers.

Safety & Health of the workers

Work site within 250m consultation zone/ During the operational period

Utility Companies

 

 

Ö

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97) & Code of Practice on Safety and Health at Work in Confined Space

S14.61

 

Atmosphere within utility manholes and chambers should be checked for methane, carbon dioxide and oxygen prior to entry.

Safety & Health of the workers

Work site within 250m consultation zone/ During the operational period

Utility companies

 

 

Ö

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97) & Code of Practice on Safety and Health at Work in Confined Space

S14.61

 

Routine landfill gas surveillance exercise should be undertaken by the utility companies when there are inspection at the manholes and chambers.  Undertaken for the duration of the site occupancy, or until such time that EPD agree that surveillance is no longer required and this should be based on all the available monitoring data for methane, carbon dioxide and oxygen.

Safety & Health of the workers

Work site within 250m consultation zone/ During the operational period

Utility companies

 

 

Ö

 

Landfill Gas Hazard Assessment Guidance Note (EPD/TR8/97) & Code of Practice on Safety and Health at Work in Confined Space

S14.61

 

If elevated LFG level is measured during monitoring at depressions trenches and other excavations, ventilation of such excavations should be taken place and sources of ignition should be kept away from areas where build-up of gas is possible.

Safety & Health of the workers

Work site within 250m consultation zone/ During the operational period

Utility companies

 

 

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, O – Operation, and Dec - Decommissioning