10 LANDSCAPE AND VISUAL IMPACTS 10.1 Introduction 10.2 ...

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Agreement No. CE10/2014 (CE) Development of Anderson Road Quarry Site - Investigation, Design and Construction EIA Report for Road Improvement Works (Ref.B11a) 10-1 January 2016 10 LANDSCAPE AND VISUAL IMPACTS 10.1 Introduction The LVIA study will investigate those landscape and visual impacts and propose the 10.1.1 appropriate mitigation measures within the intention that all works recommended by the Road Improvement Works (RIW) would be environmentally acceptable and cost effective. The residual impacts, if any, would be confined with the allowable limits. The LVIA study was carried out for the following RIW: Sau Mau Ping Road; J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road New Clear Water Bay Road and Shun Lee Tsuen Road 10.2 Environmental Legislation, Standards and Guidelines The following legislation, standards and guidelines are applicable to landscape and visual 10.2.1 impact assessment associated with the construction and operation of the RIW: Environmental Impact Assessment Ordinance (Cap.499.S.16) and the Technical Memorandum on EIA Process (EIAO TM), particularly Annexes 3,10,11 and 18; Environmental Impact Assessment Ordinance Guidance Note 8/2010; Town Planning Board Guideline No. 41 Guideline on submissions of Visual Impact Assessment for Planning Applications to the Town Planning Board; Town Planning Ordinance (Cap 131); Forests and Countryside Ordinance (Cap 96); Country Park Ordinance (Cap 208); Animals and Plants (Protection of Endangered Species) Ordinance (Cap 187); Hong Kong Planning Standards and Guidelines Chapters 4, 10 and 11; AFCD Nature Conservation Practice Note No.2 - Measurement of Diameter at Breast Height (DBH); AFCD Nature Conservation Practice Note No.3 The Use of Plant Names; DEVB TCW No. 3/2012 - Site Coverage of Greenery for Government Building Projects; DEVB TCW No. 2/2013 - Greening on Footbridges and Flyovers; ETWB TC No. 23/93 Control of Visual Impact of Slopes; ETWB TC No. 12/2000 Improvement to the Appearance of Slopes in Connection with ET WBTC 23/93; ETWB TC No. 7/2002 Tree Planting in Public Works; DEVB TC No. 6/2015 - Maintenance of Vegetation and Hard Landscape Features; ETWB TCW No. 29/2004 - Registration of Old and Valuable Trees, and Guidelines for their Preservation; DEVB TCW No. 7/2015- Tree Preservation; ETWB TCW No. 13/2003A - Guidelines and Procedures for Environmental Impact Assessment of Government Projects and Proposals Planning for Provision of Noise Barriers; ETWB TCW No. 34/2003 Community Involvement in Greening Works;

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Agreement No. CE10/2014 (CE) Development of Anderson Road Quarry Site - Investigation, Design and Construction EIA Report for Road Improvement Works (Ref.B11a)

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10 LANDSCAPE AND VISUAL IMPACTS

10.1 Introduction

The LVIA study will investigate those landscape and visual impacts and propose the 10.1.1appropriate mitigation measures within the intention that all works recommended by the Road Improvement Works (RIW) would be environmentally acceptable and cost effective. The residual impacts, if any, would be confined with the allowable limits. The LVIA study was carried out for the following RIW:

Sau Mau Ping Road;

J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road

New Clear Water Bay Road and Shun Lee Tsuen Road

10.2 Environmental Legislation, Standards and Guidelines

The following legislation, standards and guidelines are applicable to landscape and visual 10.2.1impact assessment associated with the construction and operation of the RIW:

Environmental Impact Assessment Ordinance (Cap.499.S.16) and the Technical Memorandum on EIA Process (EIAO TM), particularly Annexes 3,10,11 and 18;

Environmental Impact Assessment Ordinance Guidance Note 8/2010;

Town Planning Board Guideline No. 41 – Guideline on submissions of Visual Impact Assessment for Planning Applications to the Town Planning Board;

Town Planning Ordinance (Cap 131);

Forests and Countryside Ordinance (Cap 96);

Country Park Ordinance (Cap 208);

Animals and Plants (Protection of Endangered Species) Ordinance (Cap 187);

Hong Kong Planning Standards and Guidelines Chapters 4, 10 and 11;

AFCD Nature Conservation Practice Note No.2 - Measurement of Diameter at Breast Height (DBH);

AFCD Nature Conservation Practice Note No.3 – The Use of Plant Names;

DEVB TCW No. 3/2012 - Site Coverage of Greenery for Government Building Projects;

DEVB TCW No. 2/2013 - Greening on Footbridges and Flyovers;

ETWB TC No. 23/93 – Control of Visual Impact of Slopes;

ETWB TC No. 12/2000 – Improvement to the Appearance of Slopes in Connection with ET WBTC 23/93;

ETWB TC No. 7/2002 – Tree Planting in Public Works;

DEVB TC No. 6/2015 - Maintenance of Vegetation and Hard Landscape Features;

ETWB TCW No. 29/2004 - Registration of Old and Valuable Trees, and Guidelines for their Preservation;

DEVB TCW No. 7/2015- Tree Preservation;

ETWB TCW No. 13/2003A - Guidelines and Procedures for Environmental Impact Assessment of Government Projects and Proposals Planning for Provision of Noise Barriers;

ETWB TCW No. 34/2003 – Community Involvement in Greening Works;

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ETWB TCW No. 5/2005 - Protection of natural streams/rivers from adverse impacts arising from construction works;

ETWB TCW 8/2005 - Aesthetic Design of Ancillary Buildings in Engineering Projects;

GEO publication No. 1/2011 - Technical Guidelines on Landscape Treatment for Slopes;

GEO Publication (1999) – Use of Vegetation as Surface Protection on Slopes;

GEO Publication No. 6/2007 - Updating of GEO Publication no. 1/2000 - Technical Guidelines on Landscape Treatment and Bio-engineering for Manmade Slopes and Retaining Walls;

Lands Administration Office Practice Note (LAN PN) No. 7/2007 - Tree Preservation and Tree Removal Application for Building Development in Private Projects;

Land Administration Office Instruction (LAOI) Section D-12 - Tree Preservation;

Government General Regulation 740 – setting out restrictions on the preservation and felling of trees in Hong Kong;

WBTC No. 25/1993 - Control of Visual Impact of Slopes;

WBTC No. 17/2000 - Improvement to the Appearance of Slopes;

WBTC No. 7/2002 - Tree Planting in Public Works;

WBTC No. 36/2004 - Advisory Committee on the Appearance of Bridges and Associated Structures (ACABAS);

DEVB TC(W) No. 2/2012 – Allocation of Space for Quality Greening on Roads

Cyber Manual for Greening (GLTM of DEVB);

Guidelines on Greening of Noise Barrier (2012), GLTM of DEVB; General Guidelines on Tree Pruning, GLTM of DEVB;

Study on Landscape Value Mapping of Hong Kong;

Layman’s guide to landscape treatment of slopes, CEDD;

Landscape Character Map of Hong Kong (2005 Edition);

The Register of Old and Valuable Trees – Hong Kong, maintained by the Leisure and Cultural Services Department;

Study on green roof application in Hong Kong, (16/2/2007) ASCD;

GLTM of DEVB - Skyrise Greenery - Website: http://www.greening.gov.hk/en/new_trend/benefit_of_skyrise.html

Green Infrastructure, GLTM of DEVB - Website: http://www.greening.gov.hk/en/new_trend/green_infrastructure.html

Measures on Tree Preservation, GLTM of DEVB - Website: http://www.greening.gov.hk/en/management/tree_m_and_m.html#tree_maintenance

Guidelines on Tree Preservation during Development, GLTMS of DEVB-Website: http://www.trees.gov.hk/filemanager/content/attachments/Guidelines_on_Tree_Preservation_during_Development.pdf

Guidelines on Tree Transplanting, GLTMS of DEVB-Website: http://www.trees.gov.hk/filemanager/content/attachments/Guidelines_on_Tree_Transplanting.pdf

Restrictions on the preservation and felling of trees in Hong Kong are specified in Government General Regulation 740. The Forests and Countryside Ordinance (Cap. 96) prohibits felling, cutting, burning or destroying of trees and growing plants in forests and plantations on government land. Its subsidiary regulations prohibit the picking, felling or possession of listed rare and protected plant species. The list of protected species in

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Hong Kong is defined in the Forestry Regulations, made under Section 3 of the Forests and Countryside Ordinance (Cap. 96).

The Outline Zoning Plan gazette under the Town Planning Ordinance provides the statutory framework for land use development. Reference has been made and details are shown at item 10.4.

10.3 Assessment Methodology

General

The Landscape Impact Assessment Area for the landscape impact assessment includes 10.3.1areas within a 100 m distance from the site boundary of the RIW while the Visual Study Area for the visual impact assessment is defined by the visual envelope of the RIW. The landscape and visual impact study boundaries are shown in Figure 10.1, Figure 10.8 to Figure 10.10 respectively.

Landscape Impact Assessment

The assessment of landscape impacts has involved the following procedures. 10.3.2

Identification of the baseline landscape resources (physical and cultural) and landscape characters found within the Landscape Impact Assessment Area. This is achieved by site visit and desktop study of topographical maps, information databases and photographs.

Assessment of the degree of sensitivity of the landscape resources. This is influenced by a number of factors including:

- quality of landscape characters/resources, whether the resource/character is common or rare,

- importance and rarity of special landscape elements, whether it is considered to be of local, regional, national or global importance

- the maturity of the resource

- the ability of the resource/character to accommodate change

- Significance of the change in local and regional context.

The sensitivity of each landscape feature and character area is classified as follows: 10.3.3

High: Rare, important, mature landscape or landscape resource, sensitive to relatively small changes. High significance of the change in local and regional context.

Medium: Landscape or landscape resource of moderately valued, semi- mature of the resource, reasonably tolerant to change. Moderate significance of the change in local and regional context.

Low: Landscape or landscape resource, the nature of which is largely tolerant to change, insubstantial value, immature, insubstantial significance of the change in local and regional context.

Identification of potential sources of landscape impacts. These are the various elements of the construction works and operation procedures that would generate landscape impacts.

Assessment of the magnitude of landscape changes. The magnitude of change depends on a number of factors including:

- scale of development, the physical extent of the impact

- duration of impacts under construction and operational phases, time-scale of the impact

- compatibility of the project with the surrounding landscape

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- reversibility of change, permanent but potentially reversible, or permanent and irreversible

The magnitude of change is classified as follows: 10.3.4

Large: The landscape or landscape resource would have experienced large scale of development, long duration of impacts, low compatibility of the project with the surrounding landscape and irreversible of change.

Intermediate:

The landscape or landscape resource would have experienced moderate scale of development, reasonable duration of impacts, moderate compatibility of the project with the surrounding landscape and potentially reversible of change.

Small: The landscape or landscape resource would have experienced small scale of development, short duration of impacts, and high compatibility of the project with the surrounding landscape and reversible of change.

Negligible: The landscape or landscape resource would have no discernible change.

Identification of potential landscape mitigation measures. These may take the form of adopting alternative designs or revisions to the basic engineering and architectural design to prevent and/or minimize adverse impacts; remedial measures such as colour and textural treatment of building features; and compensatory measures such as the implementation of landscape design measures to compensate for unavoidable adverse impacts and to attempt to generate potentially beneficial long term impacts. A programme for the mitigation measures is provided. The agencies responsible for the funding, implementation, management and maintenance of the mitigation measures are identified.

Prediction of the significance of landscape impacts before and after the implementation of the mitigation measures. By synthesizing the magnitude of the various changes and the sensitivity of the various landscape resources it is possible to categorize impacts in a logical, well-reasoned and consistent fashion. Table 10.1 shows the rationale for dividing the degree of significance into four thresholds, namely insubstantial, slight, moderate, and substantial, depending on the combination of a negligible-small-intermediate-large magnitude of change and a low-medium-high degree of sensitivity of landscape resource /character.

Table 10.1 Relationship between Landscape Sensitivity and Impact Magnitude in Defining Impact Significance

Magnitude of change (Both Adverse and Beneficial Impact are assessed.)

Large Moderate Moderate / Substantial

Substantial

Intermediate

Slight / Moderate

Moderate Moderate / Substantial

Small Slight Slight / Moderate

Moderate

Negligible Insubstantial Insubstantial Insubstantial

Low Medium High

Sensitivity of Landscape Resource and Landscape Character Area

Note: All impacts are Adverse unless otherwise noted with Beneficial.

The significance of landscape impacts is categorized as follows: 10.3.5

Substantial: Adverse / beneficial impact where the proposal would cause significant deterioration or improvement in existing landscape quality.

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Moderate: Adverse / beneficial impact where the proposal would cause a noticeable deterioration or improvement in existing landscape quality.

Slight: Adverse / beneficial impact where the proposal would cause a barely perceptible deterioration or improvement in existing landscape quality.

Insubstantial: No discernible change in the existing landscape quality.

Prediction of Acceptability of Impacts. An overall assessment of the acceptability, or otherwise, of the impacts according to the five criteria set out in Annex 10 of the TM-EIAO.

Visual Impact Assessment

The assessment of visual impacts has involved the following procedures. 10.3.6

Identification of the Visual Envelopes during the construction and operational phases of the project. The visual envelope will be achieved by computer model where practical, as well as site visits and desktop study of topographic maps and photographs. Distance and other factors will be considered, to determine the zone of visual influence and the visibility of the Project from various locations. The Zone of Visual Influence /Visual Envelope is that area from which any part of the proposed Project can be fully visible, partly visible or non-visible; usually defined by natural ridgeline, man-made features, road infrastructures, etc.

The Visual Study Area for the VIA will be defined by the visual envelope of the RIW and the 10.3.7Zone of Visual Influence (ZVI) will be determined. The VIA will include:

Identification of Visually Sensitive Receivers (VSRs) within the ZVI and estimation of relative numbers of VSRs, also indicate the types of VSRs;

Assessment of the degree of sensitivity to change of the VSRs;

Identification of potential sources of visual impacts;

Assessment of the potential magnitude of change; and

Prediction of significance of visual impacts before and after the implementation of mitigation measures

These various elements of the VIA are detailed below. 10.3.8

Identification of the VSRs within the Visual Envelopes at construction and operational phases. These are the people who would reside within, work within, play within, or travel through, the ZVIs.

Assessment of the degree of sensitivity to change of the VSRs. Factors considered include:

The type of VSRs, which is classified according to whether the person is at home, at work, at play, or travelling. Those who view the impact from their homes are considered to be highly sensitive as the attractiveness or otherwise of the outlook from their home will have a substantial effect on their perception of the quality and acceptability of their home environment and their general quality of life. Those who view the impact from their workplace are considered to be only moderately sensitive as the attractiveness or otherwise of the outlook will have a less important, although still material, effect on their perception of their quality of life. The degree to which this applies depends on whether the workplace is industrial, retail or commercial. Those who view the impact whilst taking part in an outdoor leisure activity may display varying sensitivity depending on the type of leisure activity. Those who view the impact whilst travelling on a public thoroughfare will also display varying sensitivity depending on the speed of travel; and

other factors which are considered (as required by EIAO GN 8/2010) include the value and quality of existing views, the availability and amenity of alternative views, the duration or frequency of view, the estimated number of receiver population and the degree of visibility.

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Identification of Visual Envelope and Zone of Visual Influence (ZVI)

The sensitivity of VSRs is classified as follows: 10.3.9

High: The VSR is highly sensitive to any change in their viewing experience.

Medium: The VSR is moderately sensitive to any change in their viewing experience.

Low: The VSR is only slightly sensitive to any change in their viewing experience.

Identification of relative numbers of VSRs. This is expressed in term of whether there are “many“, “medium” and “few” VSRs in any one category of VSR.

Identification of potential sources of visual impacts. These are the various elements of the construction works and operation that would generate visual impacts.

Assessment of the potential magnitude of change. Factors considered include:

compatibility of the project with the surrounding landscape;

duration of impacts under construction and operational phases;

scale of development;

reversibility of change;

viewing distance; and

potential blockage of view.

The magnitude of change is classified as follows: 10.3.10

Large: The VSRs would suffer a major change in their viewing experience.

Intermediate: The VSRs would suffer a moderate change in their viewing experience.

Small: The VSRs would suffer a small change in their viewing experience.

Negligible: The VSRs would suffer no discernible change in their viewing experience.

Identification of potential visual mitigation measures. These may take the form of adopting alternative design layouts or revisions to the basic engineering and architectural design to prevent and/or minimize adverse impacts; remedial measures such as colour and textural treatment of building features; and tree planting to screen the roads and associated bridge structures. A programme for the mitigation measures is provided. The agencies responsible for the implementation, management and maintenance of the mitigation measures are identified and their approval-in-principle will be sought.

Prediction of the significance of visual change before and after the implementation of the mitigation measures. By synthesizing the magnitude of the various visual change and the sensitivity of the VSRs, and the numbers of VSRs that are affected, it is possible to categories the degree of significance of the impacts in a logical, well-reasoned and consistent fashion. Table 10.2 shows the rationale for dividing the degree of significance into four thresholds, namely, insubstantial, slight, moderate and substantial, depending on the combination of a negligible-small-intermediate-large magnitude of change and a low-medium-high degree of sensitivity of VSRs. Consideration is also given to the relative numbers of affected VSRs in predicting the final impact significance - exceptionally low or high numbers of VSRs may change the result that might otherwise be concluded from Table 10.2.

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Table 10.2 Relationship between Visual Receptor Sensitivity and Impact Magnitude in Defining Impact Significance

Magnitude of Change (Both Adverse and Beneficial Impact are assessed.)

Large Moderate Moderate / Substantial

Substantial

Intermediate Slight / Moderate

Moderate Moderate / Substantial

Small Insubstantial / Slight

Slight / Moderate

Moderate

Negligible Insubstantial Insubstantial Insubstantial

Low Medium High

Sensitivity of Visual Sensitive Receivers (VSRs)

Note: All impacts are Adverse unless otherwise noted with Beneficial.

The significance of visual impacts is categorized as follows: 10.3.11

Substantial: Adverse / beneficial impact where the proposal would cause significant deterioration or improvement in existing visual quality.

Moderate: Adverse / beneficial impact where the proposal would cause a noticeable deterioration or improvement in existing visual quality.

Slight: Adverse / beneficial impact where the proposal would cause a barely perceptible deterioration or improvement in existing visual quality.

Insubstantial: No discernible change in the existing visual quality.

The assessment describes any likely negative (adverse) or unavoidable residual visual impacts to VSRs. Residual impacts are those which remain post implementation of mitigation measures i.e. 10-15 years after commissioning of the development. The level of impact is derived from the magnitude of change which the development will cause to the existing visual resource and its ability to tolerate change, i.e. the quality and sensitivity of the view or landscape character / resource taking into account the beneficial effects of the proposed mitigation.

Prediction of Acceptability of Impacts. An overall assessment of the acceptability, or otherwise, of the impacts according to the five criteria set out in Annex 10 of the TM-EIAO.

Funding, implementation, management and maintenance of the mitigation proposals will be 10.3.12resolved according to the principles in EIAO TM, ETWB TCW No. 29/2004, 6/2015 No. 2/2004 and DEVB TCW no. 2/2013. All mitigation proposals in this report are practical and achievable within the known parameters of funding, implementation, management and maintenance. The suggested agents for the funding and implementation (and subsequent management and maintenance, if applicable) are included in the report.

10.4 Review of Planning and Development Control Framework

The Study Area of Sau Mau Ping Road falls within “Green Belt”, “Government, Institution or 10.4.1Community”, “Open Space” and “Residential (Group A)” on the Kwun Tong (South) Outline Zoning Plan (OZP) No. S/K14S/20 gazetted on 21 August 2015. Also, within “Green Belt” and “Residential (Group A)” on the Kwun Tong (North) Outline Zoning Plan (OZP) No. S/K14N/14 gazetted on 26 June 2015.

The Study Area of J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay 10.4.2Road and New Clear Water Bay Road falls within “Green Belt” and “Residential (Group C)” on the Tseng Lan Shue Outline Zoning Plan (OZP) No. S/SK-TLS/8 gazetted on 24 March 2006. Also within “Green Belt”, “Residential (Group A)”, “Residential (Group B)” and “Government, Institution or Community” on the Ngau Tau Kok & Kowloon Bay Outline Zoning Plan (OZP) No. S/K13/28 gazetted on 11 April 2014.

The Study Area of New Clear Water Bay Road and Shun Lee Tsuen Road falls within “Green 10.4.3Belt”, “Residential (Group A)”, “Government, Institution or Community” and “ Open Space” on

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the Ngau Tau Kok & Kowloon Bay Outline Zoning Plan (OZP) No. S/K13/28 gazetted on 11 April 2014.

Review of Planning and Development Control Framework is summarized as below: 10.4.4

The junction of Sau Mau Ping Road / Lin Tak Road is currently overloaded. The situation 10.4.5would be worsened upon the intake of ARQ. To improve the situation, Tseung Kwan O Road slip road to Sau Mau Ping Road will be shifted southwards with associated slope works and retaining walls to cater for the proposed flyover. The impact mainly at the Green Belt and Residential (Group A) of OZP under Kwun Tong (South) Outline Zoning Plan No. S/K14S/20. They are all impact from slope area. Impact to the OZP is provided in Figure10.48.

The proposed work of Junction of Clear Water Bay Road and On Sau Road and Junction of 10.4.6Clear Water Bay Road and New Clear Water Bay Road includes improvement works on Clear Water Bay Road and detouring right-turn movement from On Sau Road northbound onto Clear Water Bay Road eastbound by construction of a new U-turn facility. Green Belt of Tseng Lan Shue Outline Zoning Plan No. S/SK-TLS/8 will be affected with slope work and removing of vegetation on the slope. Impact to the OZP is provided in Figure10.47.

The proposed work of Junction of New Clear Water Bay Road and Shun Lee Tsuen Road is 10.4.7to widen a section of 130m long of the existing New Clear Water Bay Road westbound carriageway opposite to Shun Lee Estate from one lane to two lanes, and to lengthen the merging lane from Shun Lee Tsuen Road slip road within the area of an existing slope. Slope works and retaining walls are required for the lengthened slip road. Green Belt, Government, Institution a Community and Open Space under Ngau Tau Kok & Kowloon Bay Outline Zoning Plan No. S/K13/28 will be affected. They are all slope works along with semi-natural dense hillside vegetation. Impact to the OZP is provided in Figure10.46.

The affected areas are mainly slope works, including loss of open space shown above. Open 10.4.8space under No. S/K13/28 including vegetated man made slope relating to New Clear Water Bay Road and Shun Lee Tsuen Road adjacent to the Shun Lee Tsuen Sports Centre and Park. RIW only affects the vegetation on the man-made slope within the Open Space while the entire sport centre and park are preserved and retained.

Design and conservation intention is illustrated in Section 3.2 (Consideration of Alternative 10.4.9Development Options).

Proposed Works Plan title/number Land use zonings Approximate area of the land use zones to be

affected by the DP

Sau Mau Ping Road Kwun Tong (South) Outline Zoning Plan No. S/K14S/20 (gazetted on 21 Aug 2015)

Green Belt 2250m2

Government, Institution or Community

Nil

Open Space Nil

Residential (Group A) 3400m2

Kwun Tong (North) Outline Zoning Plan No. S/K14N/14 (gazetted on 26 Jun 2015)

Green Belt Nil

Residential (Group A) Nil

J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road

Tseng Lan Shue Outline Zoning Plan No. S/SK-TLS/8

Green Belt 2450m2

Residential (Group C) Nil

Ngau Tau Kok & Kowloon Bay Outline Zoning Plan No. S/K13/28 (gazetted on 4 Nov 2014)

Green Belt Nil

Residential (Group A) Nil

Residential (Group B) Nil

Government, Institution or Community

Nil

New Clear Water Bay Road and Shun Lee Tsuen Road

Ngau Tau Kok & Kowloon Bay Outline Zoning Plan No. S/K13/28 (gazetted on 4 Nov 2014)

Green Belt 1400m2

Residential (Group A) Nil

Government, Institution or Community

1650m2

Open Space 400m2

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Photomontages for the VSRs for the existing conditions, Day 1 without Mitigation Measure, 10.4.10Day 1 with Mitigation Measure and 10 Years with Mitigation measures are provided in Figure 10.27 – 10.39 to illustrate the future outlook of the area.

Proposed Works VSR Viewpoints

Sau Mau Ping Road VP1, VP2, VP 3, VP 4

J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road

VP 5, VP 6, VP 7, VP 8

New Clear Water Bay Road and Shun Lee Tsuen Road VP 9, VP 10, VP 11

10.5 Baseline Study

Landscape baseline study comprise the identification and evaluation of the sensitivity of 10.5.1Landscape Resources (LRs) and Landscape Character Areas (LCAs) within the landscape impact assessment study boundary of 100m from the site boundaries of the RIW.

Landscape Issues

Landscape impact assessment study boundaries are 100m from the RIW boundaries; a 10.5.2system shall be derived for judging landscape significance as required under the TM. The sensitivity of the landscape framework and its ability to accommodate change shall be particularly focused on. The degree of compatibility of the RIW with the existing physical aspects of the site, including topography and mature vegetation, human aspects of the site such as developments and infrastructure, and the key landscape issue of the existing site and planned landscape setting will be identified. LRs within the assessment areas will be described, appraised, analyzed and evaluated.

Three study boundaries are formed based on the RIW: 10.5.3

Sau Mau Ping Road;

J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road

New Clear Water Bay Road and Shun Lee Tsuen Road

The landscape impact assessment shall evaluate the potential landscape impact so as to 10.5.4illustrate the significance of such impact arising from the proposed RIW. Clear mapping of the baseline landscape resources and landscape character areas will be aroused.

Visual Issues

Important visual issues for the RIW include potential changes to the existing views, and 10.5.5changes to visual amenity and visual character. These changes in views may be the result of either introducing new man-made elements into the landscape (e.g. introduction of construction equipment and features of the project itself) or by changes to existing visual resources (e.g. removal of existing vegetation).

10.6 Landscape Resources and Landscape Character Areas

Landscape Baseline

According to the EIA Study Brief, the assessment area for landscape impact assessment 10.6.1shall include areas within 100m distance of the boundary and of all works areas. Preliminary baseline review of existing landscape resources are described as below. Key LRs within 100m Landscape Study Area have been identified and shown in Figures 10.1 to Figure 10.3 and photo of these LRs shown in Figure 10.4a to Figure 10.4c.

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Physical Landscape Resources

Valley

Clear Water Bay Road goes along Kowloon Peak (603 mPD) and valley between Tai Sheung 10.6.2Tok (a hill reaching a height of 419 mPD). Semi- natural dense hillside vegetation grows extensively and continuously along both sides of the road within the majority of study area. Meanwhile, engineered slope with semi-natural dense hillside vegetation is located along the western end of the study area.

The hillside woodlands, together with the grassland/shrub areas, are part of the Tai Sheung 10.6.3Tok creating a green backdrop to the valley, and it’s an important visual amenity along the ridgeline at Kwun Tong north area. Tree species includes Acacia mangium, Mallotus paniculatus, Cinnamonum camphora, Ficus microcarpa, Litsea glutinosa and Sterculia lanceolata. Most of the trees are mature with heights ranging from approximately 6 – 15m; crown spread 5 – 12m; trunk diameters 120-250mm. Most trees are generally in poor form and health conditions.

Existing Trees

It is estimated that approximately 5,000 nos. of trees are found within the study area of RIW. 10.6.4Please refer to Group Tree Survey Plan on Figure10.49 to Figure 10.51 and Figure 10.52 to Figure 10.54 shows tree group overlayed with LR. The trees surveyed are generally with poor form, fair health, poor structure and low amenity value. Trees have low anticipated survival rate after transplanting as they are all growing on slopes.

A total of approximately 5,000 numbers of trees including 103 species have been surveyed. 10.6.5Broad Brush Tree Survey Assessment Schedule is provided at Appendix 10.1.

Four numbers of Aquilaria sinensis are recorded, which are under protection by Cap 586 (The 10.6.6Protection of Endangered Species of Animals and Plants Ordinance). Also they are on the list of rare and precious plants of Hong Kong and China Plant Red Data Book. They have been listed as a Wild Plant under State Protection (Category II) in China owing to the decline in its distribution.

Two of the Aquilaria sinensis will be in conflict with the proposed road and is proposed to be 10.6.7transplanted, detail vegetation survey will be carried out and transplanting methodology will be submitted to relevant government agencies for review and approval.

Apart from Aquilaria sinensis, all trees have no special conservation status. Acacia confusa is 10.6.8the major species with approximately 1,200 nos. of trees being surveyed. Hillside woodland and semi-natural dense hillside vegetation of Tai Sheung Tok is located next to the Clear Water Bay Road. An extensive and continuous area of this natural hillside woodland is at the summit of the mountain as well as on the north-eastern side of the quarry. Groups or more individual trees grow densely in this woodland area and the dominant species are native trees.

This hillside woodland is important in the landscape and visual context of the region and 10.6.9merits conservation and protection. Engineered slope along with semi-natural dense hillside vegetation and semi-natural dense hillside vegetation are mainly mature trees with heights ranging from approximately 6-15 m.

Impact on existing mature trees has been reviewed through design option in Section 3. 10.6.10

Urban landscape

Urban landscape, characterized by high-density residential buildings interwoven with minor 10.6.11feeder roads and other hard landscape areas also found at the study areas. Vegetation in this area is largely landscape planting with scattered amenity shrubs (e.g. Duranta erecta, Schefflera arboricola and Aglaia odorata) and medium-sized trees (e.g. Aleurites moluccana, Delonix regia and Lagerstroemia speciosa, Archontophoenix alexandrae, Bauhinia x blakeana, Livistona chinensis, with heights between 3-10m and trunk diameters ranging from 100-500 mm. They are mainly planted in small public green spaces, roadside planting and private gardens. Most trees are generally in fair form and health conditions with regular horticultural maintenance.

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Landscape Resources (LRs)

The details of Baseline Landscape Resources which will be potentially affected by the RIW, 10.6.12together with their sensitivity are described in Table 10.3. The locations of baseline landscape resources are mapped in Figure 10.1 to Figure 10.3. Photo views illustrating the landscape resources within 100m Landscape Study Areas is illustrated in Figure 10.4a to Figure 10.4c.

Landscape Character Areas (LCAs)

Landscape character zones have been identified within 100m Landscape Study Areas in 10.6.13accordance with the Study on Landscape Value Mapping of Hong Kong. These are described below and illustrated in Figure 10.5 and Figure 10.6. Photo views illustrating the landscape character areas within the 100m Landscape Study Areas are illustrated in Figure 10.7 inclusive.

Table 10.3 Baseline of Landscape Resources (LRs) / Landscape Character Areas and Their Sensitivity

ID No. Relevant

Tree Group

LR/ LCA Landscape Resources / Landscape Characters Sensitivity

LR1 Major Transport Route

LR1.1 TG6 Clear

Water Bay Road

Major road for traveling between Sai Kung and Kowloon, greening of central divider with major tree species of Melaleuca cajuputi subsp. cumingiana with heights approximately 9-14 m; crown spread 4-6 m; trunk diameters 250-450 mm usually need minimal maintenance and highly tolerant to change.

Trees are generally in fair form and health conditions; amenity value is medium. The trees species are common. Therefore, their sensitivity is considered to be low.

Low

LR1.2 TG8 New Clear Water Bay

Road

Major road for traveling between Choi Hung and Clear Water Bay Road, greening of central divider with major tree species of Melaleuca cajuputi subsp. cumingiana and Ficus virens with heights approximately 4-11 m; crown

spread 3-8 m; trunk diameters 100-400 mm usually need minimal maintenance and highly tolerant to change.

Undersized Aquilaria sinensis which protected under Cap 586 has been identified at this LR with trunk diameters 40mm, height around 3m, crown spread 1m. It is in fair condition. Proposed works will conflict with this protected tree and consider to transplant.

Trees are generally in fair form and health conditions; amenity value is medium. The trees species are common and young. However, this LR is intolerant to change with protected species identified and considered to have high sensitivity.

High

LR1.3 TG13 Tseung Kwan O

Road

Major road for traveling between Tseung Kwan O and Kowloon, greening of central divider with major tree species of Leucaena leucocephala with heights approximately 6-14 m; crown spread 2-8 m; trunk diameters 100-370 mm usually need minimal maintenance and highly tolerant to change.

Trees are generally in poor form and health conditions; amenity value is low. The trees species are common and young. Therefore, their sensitivity is considered to be low.

Low

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ID No. Relevant

Tree Group

LR/ LCA Landscape Resources / Landscape Characters Sensitivity

LR2 Hillside Woodland

LR2

Part of TG2,

Part of TG5

Hillside Woodland

Woodland area with trees grows densely at hillside of part of the Anderson Road Quarry. This hillside woodland is important in the landscape and visual context of the Landscape Study Area and merits conservation and protection.

Most of the trees are mature with heights ranging from approximately 6-10 m; crown spread 4-6 m; trunk diameters 120-250 mm. Dominant trees species include Acacia spp., Celtis sinensis, Cinnamomum spp, Schefflera heptaphylla, and Machilus spp.

Aquilaria sinensis which protected under Cap 586 has been identified at this LR with trunk diameters 150mm, height around 7m, crown spread 5m. It is in fair condition. Also, Luofushan Joint-fir can be found which raising the conservation value of this LR.

Most trees are generally in poor to fair form and health condition. This LR is intolerant to change with protected species identified and considered to have high sensitivity.

High

LR3 Semi-natural Dense Hillside Vegetation

LR3.1 TG1

Vegetation around Fei Ngo Shan

Road

This LR located at lower area of Fei Ngo Shan, where some trees are relatively mature. The dominant planted tree species within these areas are ranging in heights from 4-16 m; crown spread 3-12 m, e.g. Acacia confuse and Litsea glutinosa etc.

Aquilaria sinensis which protected under Cap 586 has

been identified at this LR with trunk diameters 130mm, height around 8m, crown spread 5m. It is in poor form and structural condition.

Another plant species of conservation importance, Luofushan Joint-fir, are also identified at this LR.

It provides a series of green fingers often associated with the hills and elevated areas, providing visual relief and a green backdrop of Clear Water Bay Road. Vegetation is mostly in poor form and fair health condition. Amenity value is considered as low. This LR is intolerant to change. With protected species identified at this LR, sensitivity to change is considered as high.

High

LR3.2 TG3

Vegetation at North of

Clear Water Bay

Road

Hillside vegetation between Fei Wan Road and Clear Water Bay Road, which providing visual relief and a green backdrop to the rural development area.

Tree species within these areas are ranging in heights from 4-16 m; crown spread 3-14 m; trunk diameter 100-500. Such as Acacia spp, Machilus spp. and Litsea glutinosa, which are common specie planted at hillside. This LR is moderate tolerant to change. It is considered as medium sensitivity.

Medium

LR3.3

Part of TG4,

Part of TG5,

Vegetation at South of

Clear Water Bay Road and

Hillside vegetation extends from the hillside woodland provides a series of green fingers to the Quarry landscape. Also, this LR included hillside vegetation around Clear Water Bay Road, giving the green backdrop

High

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ID No. Relevant

Tree Group

LR/ LCA Landscape Resources / Landscape Characters Sensitivity

Part of TG11, TG12

Around New Clear Water Bay

Road

to the urban development area.

Tree species within this area are common species such as Acacia spp., and Mallotus spp. Vegetation is mostly in fair to poor form and health condition. Tree species within this area are ranging in height from 2-16 m; crown spread 2-8 m; trunk diameter 100-700mm.

Apart from that, protected species, like undersize or seeding Aquilaria sinensis and Silver-Back Artocarpus

can be identified.

This LR is intolerant to change. With protected species identified at this LR, sensitivity to change is considered as high.

LR3.4 TG7

Vegetation of Merging Lane next to Shun

Lee Estate

Open space with intensive greening next to Shun Lee Estate and road amenity with normal maintenance is located merging line of New Clear Water Bay Road.

Tree species within this area are ranging in height from 2-19 m; crown spread 2-7 m; trunk diameter 120-470mm. Such as Hyophorbe lagenicaulis and Roystonea regia. This LR is high tolerant to change. It is considered as low sensitivity.

Low

LR3.5 TG15 Vegetation of Lam Tin

Park

Greening and reinstating of closed Ma Yau Tong Central Landfill, Lam Tin Park is important amenity to the urban development area nearby.

Tree species within this area are ranging in height from 4-16 m; crown spread 3-14 m; trunk diameter 100-600mm. Such as Acacia confuse and Mallotus paniculatus.

Providing green fingers associated with elevated area, such as Ng Kwai Shan. This LR is moderate tolerant to change. It is considered as low sensitivity.

Low

LR3.6 Part of TG18

Vegetation of Ma Yau Tong West Sitting-Out

Area

Greening and reinstating of closed Ma Yau Tong West Landfill, Its hillside vegetation providing green buffer to the urban development area nearby, such as Sau Mau Ping or Tsui Ping Estate.

Tree species within this area are ranging in height from 4-13 m; crown spread 3-10 m; trunk diameter 100-400mm. Such as Schefflera heptaphylla and Mallotus paniculatus.

This LR is tolerant to change. It is considered as low sensitivity.

Low

LR4 Urban Development Area

LR4

Part of TG4,

Part of TG10, Part of TG11, TG16, Part of TG18, TG19

Urban Development Area

This resource refers to urbanized areas which are intensively developed and characterized by high-density residential buildings interwoven with minor feeder roads and other hard surface areas. Choi Wan Estate, Choi Fai Estate, Disciplined Services Quarters, Shun On Estate, Shun Lee Estate, Tsui Ping Estate, Po Tat Estate, Sau Mau Ping South Estate, Hing Tin Estate and Hong Wah Court.

There are also schools (e.g. Kwun Tong Government Secondary School, United Christian College (Kowloon East), Good Hope School and St. Edward's Catholic Primary School, etc), shopping centres and community

Low

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ID No. Relevant

Tree Group

LR/ LCA Landscape Resources / Landscape Characters Sensitivity

centres, small parks, amenity areas, buffer strips and sitting out areas associated with these residential areas.

Vegetation in this LR is residential landscape planting with scattered amenity shrubs (e.g. Duranta erecta, Schefflera arboricola and Aglaia odorata) and medium-sized trees (e.g. Aleurites moluccana, Delonix regia and Lagerstroemia speciosa, Archontophoenix alexandrae, Bauhinia x blakeana, Livistona chinensis, with heights

between 6m-10m, crown spread 2-8m and trunk diameters ranging from 20 mm-60 mm) in small public green spaces and roadside planting.

Nevertheless, there is one Old and Valuable Tree (OVT) (ref. no. LCSD HD/KT/1, an Albizia julibrissin with DBH 1160 mm and crown spread 2900 mm; located at the garden near the Sau Ming Road, Sau Wo House and Sau Yat House) identified outside the 100 m landscape study boundary of Sau Mau Ping Road. It is considered there is no impact on the OVT. Most trees are generally in fair form and health conditions with horticultural maintenance.

Overall, this LR has limited landscape value and a high capacity to accommodate change. Its sensitivity is therefore considered to be low.

LR5 Shun Lee Tsuen Sports Centre and Park

LR5 Part of TG10

Shun Lee Tsuen Sports Centre

and Park

Shun Lee Tsuen Sports Centre and Park is one of the popular and ideal recreation and sports venues. With a total area of 3.3 ha, it offers a wide range of leisure and recreational facilities to the local residents; 3 indoor golf driving bays on the Ground Floor of the Centre; which offers golf related programmes each month for public participation.

Major tree species found include Archontophoenix alexandrae, Dypsis lutescens, Ficus spp., Lagerstroemia speciosa and Bauhinia spp. in heights between 4m-13m; crown spread 2m-12m; trunk diameter 100-550. Most trees are generally in fair form and fair health condition with horticultural maintenance. The landscape quality of this resource is considered as high accommodate change.

The overall sensitivity of this resource is considered as low.

Low

LR6 Quarry

LR6 Part of TG5

Quarry

This LR located at the junction of On Sau Road and New Clear Water Bay Road incorporates a pond area that is part of the quarry of ARQ, as well as the buildings, tracks and equipment associated with the operation of the quarry. Given that these areas are intensively disturbed and only limited vegetation is present.

Overall this LR is considered to be reasonably tolerant to change and hence has a low sensitivity.

Low

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ID No. Relevant

Tree Group

LR/ LCA Landscape Resources / Landscape Characters Sensitivity

LR7 Rural Development Area

LR7 Part of TG2

Rural Development

Area

Rural development areas within the Landscape Study Area are located at the foothill of Fei Ngo Shan Road. A large portion of this LR is low-rise residential developments. The modern villages concentrate around Fei Ngo Shan (e.g. Sienna Garden, Helena Heights, Swan Villas and Winsor Castle etc.). The modern villages are connected by narrow lanes and footpaths. This LR trees commonly found include Celtis sinensis, Ficus elastic, Ficus subpisocarpa, Mallotus paniculatus, Ravenala madagascariensis, Sapium discolour and Terminalia catappa, with a height ranging from 6 – 15m, indicating the variety of the trees’ age and maturity. Most trees are generally in poor to fair form and fair health condition. This LR is moderate tolerant to change.

The overall sensitivity of this LR is considered as medium.

Medium

LR8 Engineered Slope along with Semi-natural Dense Hillside Vegetation

LR8.1

Part of TG4,

Part of TG5

Engineered Slope along Clear

Water Bay Road

Roadside tree planting strip and slope stabilization works provides a greening/visual buffer between busy road and adjacent residential developments. Common trees found such as Acacia spp., Ficus spp., Leucaena leucocephala, Casuarina equisetifolia etc in heights between 4m-13m; crown spread 2m-12m; trunk diameter 100-450. Most trees are generally in fair to poor form and health condition. This LR is intolerant to change, since the maturity of the LR.

The sensitivity of this landscape resource is high.

High

LR8.2 Part of TG11

Engineered Slope along

North of New Clear Water Bay

Road

Roadside tree planting strip and slope stabilization works provides a greening/visual buffer between busy road and adjacent residential developments, such as Choi Fai Estate. Common trees found such as Acacia spp., Ficus spp., Machilus spp. etc in heights between 4m-13m; crown spread 2m-12m; trunk diameter 100-500. Most

trees are generally in fair to poor form and health condition. This LR is intolerant to change, since the maturity of the LR.

The sensitivity of this landscape resource is high.

High

LR8.3 TG9

Engineered Slope along

South of New Clear Water Bay

Road

Roadside tree planting strip and slope stabilization works provides a greening/visual buffer between busy road and adjacent residential developments associated with hillside of Jordan Valley park behind.

Common trees found such as Acacia spp., Ficus spp., Litsea glutinosa, Macaranga tanarius var. tomentosa etc. in heights between 2m-18m; crown spread 2m-9m; trunk diameter 100-500. Most trees are generally in fair to poor

form and health condition. This LR is intolerant to change, since the maturity of the LR.

The sensitivity of this landscape resource is high.

High

LR8.4 TG14 Engineered Slope

Rock slope with greening on top, common tree species provided such as Acacia spp., Ficus spp., Leucaena

High

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ID No. Relevant

Tree Group

LR/ LCA Landscape Resources / Landscape Characters Sensitivity

along Lin Tak Road

leucocephala, Bauhinia variegate ranging in heights from 4-16 m; crown spread from 2-10m; trunk diameter 100-550mm. Narrow soil to suggest the slope trees, most trees are generally in poor form. The works of RIW are mainly at the close proximity of this LR. This LR is intolerant to change, since the maturity of the LR. The sensitivity of this landscape resource is high.

LR8.5 TG17

Engineered Slope

along Sau Mau Ping

Road

Large area of roadside engineered slope of Sau Mau Ping area, greening of slope provided stabilization and visual buffer. Dense hillside vegetation can be found on slope with common species, such as Acacia confuse, Casuarina equisetifolia and Macaranga tanarius var. tomentosa

ranging in heights from 4-15 m; crown spread 3-10 m; trunk diameter 100-650mm. Most trees are generally in poor form and fair health condition with low amenity value.

Protected incense tree seedlings are also recorded which increase the sensitivity of the LR. This LR is intolerant to change, since the maturity of the LR. The sensitivity of this landscape resource is high.

High

LR9 Watercourses

LR9.1

Part of TG1,

Part of TG2,

Part of TG3,

Part of TG4

Natural Watercour

se

Three natural watercourses were identified within the study area. Two of which were identified at the west of the Sienna Garden (i.e. northwest to the proposed RIW at J/O Clear Water Bay Road / On Sau Road). It will only temporary flows during / after period of heavy rain.

The natural watercourses range from 1 m to 3 m wide, and had rocky substratum. The dense, riparian vegetation dominated by tree species Machilus chekiangensis, Machilus pauhoi, Sterculia lanceolata; shrubs Opposite-leaved Fig and Wild Coffee; and herb species Giant Alocasia, Hainan Galangal, and Oriental Blechnum.

This LR is intolerant to change. The sensitivity of this landscape resource is high.

High

LR9.2

Part of TG1,

Part of TG17

Modified Watercour

se

Modified watercourse refers to artificial structures for drainage, flood control or irrigation purposes. The modified watercourses ranged from 1 m to 2.5 m in width, had a man-made concrete embankment and base, and were generally open with temporary, slow to moderate water flow. Low coverage and diversity of aquatic / riparian vegetation was recorded from the channels, while most recorded species were very common / common in Hong Kong, such as Bidens alba, Annual Bluegrass (Ipomoea cairica) and Mile-a-minute Weed (Mikania micrantha). No flora species of conservation importance were recorded with in this LR.

Overall this LR is common and considered to be reasonably tolerant to change, hence has a low sensitivity.

Low

LCA1 Peaks, Uplands and Hillsides LCA

LCA1

TG1, TG2, TG3, TG4,

Peaks, Uplands

and Hillsides

This is an upland landscapes. It consists of hillsides, knolls, ridges and spurs, they are generally covered in scrub vegetation with rocky outcrops or boulder fields. It also consists of Kwun Tong Government School, Sienna

High

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ID No. Relevant

Tree Group

LR/ LCA Landscape Resources / Landscape Characters Sensitivity

TG5, TG6

LCA Garden and part of Shun Chi Court.

Woodland may be found on lower slopes or in sheltered gullies and ravines, where permanent of seasonal rocky streams tumble down these hillsides. It provides a green backdrop for East Kowloon.

Across the whole Landscape Study Area, this LCA is similar in nature and given its high amenity and quality and the fact it has little tolerance to change as well as its importance to the landscape setting of the nearby and wider areas, it is considered to have a high sensitivity.

LCA4 Urban LCA

LCA4.1

TG7, TG8, TG9,

TG10, TG11, TG12

Urban LCA

(Shun Lee Tsuen)

Shun Lee Tsuen and around residential area comprises a mix of low to high buildings for residential uses. The streetscape is utilitarian with limits soft landscape treatment. It is considered to have a high tolerance to change and be of medium to low amenity value. Its sensitivity is considered to be low.

Low

LCA4.2

TG13, TG14, TG15, TG16, TG17, TG18, TG19

Urban LCA (Sau Mau Ping)

Sau Mau Ping and around residential area comprised new and high buildings for residential uses. The streetscape is utilitarian with limits soft landscape treatment. It is considered to have a high tolerance to change and be of low amenity value. Its sensitivity is considered to be low.

Low

LCA5 Urban Parks LCA

LCA5 Part of TG10

Urban Parks LCA

This area offers a wide range of leisure and recreational facilities to the local residents of Shun Lee Tsuen located to the north-west of the assessment areas. The park offers recreational related programmes each month for public participation. It provides a wide range of active and passive recreational facilities for the public. The landscape quality of this resource is considered as medium. The ability of this resource to accommodate change is medium. The overall sensitivity of this resource is considered as medium.

Medium

The sensitivity of LRs and LCAs are summarized as below: 10.6.14

ID No. LR/ LCA Sensitivity

LR1 Major Transport Route

LR1.1 Clear Water Bay Road Low

LR1.2 New Clear Water Bay Road High

LR1.3 Tseung Kwan O Road Low

LR2 Hillside Woodland

LR2 Hillside Woodland High

LR3 Semi-natural Dense Hillside Vegetation

LR3.1 Vegetation around Fei Ngo Shan Road High

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LR3.2 Vegetation at North of Clear Water Bay Road Medium

LR3.3 Vegetation at South of Clear Water Bay Road and Around New Clear Water Bay Road

High

LR3.4 Vegetation of Merging Lane next to Shun Lee Estate Low

LR3.5 Vegetation of Lam Tin Park Low

LR3.6 Vegetation of Ma Yau Tong West Sitting-Out Area Low

LR4 Urban Development Area

LR4 Urban Development Area Low

LR5 Shun Lee Tsuen Sports Centre and Park

LR5 Shun Lee Tsuen Sports Centre and Park Low

LR6 Quarry

LR6 Quarry Low

LR7 Rural Development Area

LR7 Rural Development Area Medium

LR8 Engineered Slope along with Semi-natural Dense Hillside Vegetation

LR8.1 Engineered Slope along Clear Water Bay Road High

LR8.2 Engineered Slope along North of New Clear Water Bay Road High

LR8.3 Engineered Slope along South of New Clear Water Bay Road High

LR8.4 Engineered Slope along Lin Tak Road High

LR8.5 Engineered Slope along Sau Mau Ping Road High

LR9 Watercourses

LR9.1 Natural Watercourse High

LR9.2 Modified Watercourse Low

LCA1 Peaks, Uplands and Hillsides LCA

LCA1 Peaks, Uplands and Hillsides LCA High

LCA4 Urban LCA

LCA4.1 Urban LCA (Shun Lee Tsuen) Low

LCA4.2 Urban LCA (Sau Mau Ping) Low

LCA5 Urban Parks LCA

LCA5 Urban Parks LCA Medium

Visual Envelope

Two Visual Envelopes are identified in the RIW area: 10.6.15

“J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road” and “New Clear Water Bay Road and Shun Lee Tsuen Road” shared the same Visual Envelope, while Sau Mau Ping Road is located in a separate Visual Envelope

For the Sau Mau Ping Road, the ridgeline of Black Hill rising to over 281 mPD, forms the 10.6.16principle southern and eastern boundaries of the Visual Envelope. The boundary line of DAR and ARQ forming the northern boundaries of the Visual Envelope and the urban development, like Tsui Ping Estate and Hong Yat Court, forms the western boundary.

For New Clear Water Bay Road, the ridgeline of Kowloon Peak rising to approximately 600 10.6.17mPD and the boundary line of DAR and ARQS, are forming the northern and southern boundaries. Eastern boundary end at Denon Terrace and western boundary extended to the

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Kwun Tong Bypass. The Visual Envelope of the project is illustrated in Figure 10.8 to Figure 10.10.

The RIW sites would be visible from vast Hong Kong urban areas of Lam Tin, Choi Hung, Kai, 10.6.18Tak. It should be noted that the actual extent of views is determined by numerous factors including the distance away and level of the viewing position, the weather/ visibility, the orientation of individual buildings, as well as the degree of screening offered by the landform, buildings and vegetation. To rationalize this situation, it is necessary to identify the key sensitive receivers and viewing areas, so as to assess the potential visual impacts on those areas and their populations. These VSRs are mapped in Figure 10.11 to Figure 10.13.

The Planned DAR is currently under construction but will be part of the baseline conditions by 10.6.19the time the proposed development finished and will be the receivers.

10.7 Visually Sensitive Receivers (VSRs)

Within the Visual Envelope, a number of key VSRs have been identified. VSRs are mapped in 10.7.1Figure 10.11 to Figure 10.13. They are listed, together with their baseline assessment and sensitivity, in Table 10.4. Photo views illustrating the VSRs are shown in Figure 10.14 and Figure 10.15 inclusive.

Views Point

VSRs located in close vicinity of RIW with visual influence are mapped in Figure 10.11 to 10.7.2Figure 10.13. The baseline assessment of VSRs shown in Table 10.4.

Viewpoints which are selected have covered all types of VSR including residential and 10.7.3pedestrian traveling from different distances and level.

New Clear Water Bay Road Southeast (VP1), Shun Ching Street Sourtheast (VP3), New 10.7.4Clear Water Bay Road Northeast (VP5), On San Road North (VP8) and Lin Tak Road Northeast (VP11) are travelling VSR. They demonstrate the visual impacts to travellers passing by the surrounding area of the RIW from distances 10m to 200m away.

Shun Lee Disciplined Services Quarters (VP2), Shun On Estate (On Chung House) (VP4), 10.7.5Sienna Garden South (VP6), Lee Cheung House Northeast (VP7), Po Tai Estate South (VP9), Choi Fai Estate Southeast (VP12), Shun On Estate (VP13), Hing Tin Estate (Choi Tin House) North (VP10) are residential VSR. They demonstrate the visual impacts to residential area surrounding the RIW from distances 40m to 650m away.

Viewpoints are identified as: 10.7.6

(1) VP1 from NEW CLEAR WATER BAY ROAD SOUTHEAST; (2) VP2 from SHUN LEE DISCIPLINED SERVICES QUARTERS (Block 6) NORTHEAST; (3) VP3 from SHUN CHING STREET SOURTHEAST; (4) VP4 from SHUN ON ESTATE (ON CHUNG HOUSE) NORTHWEST; (5) VP5 from NEW CLEAR WATER BAY ROAD NORTHEAST; (6) VP6 from SIENNA GARDEN SOUTH; (7) VP7 from SHUN LEE ESTATE (LEE CHEUNG HOUSE) NORTHEAST; (8) VP8 from ON SAN ROAD NORTH; (9) VP9 from PO TAI ESTATE (TAT SHUN HOUSE) SOUTH; (10) VP10 from HING TIN ESTATE (CHOI TIN HOUSE) NORTH; (11) VP11 from LIN TAK ROAD NORTHEAST; (12) VP12 from CHOI FAI ESTATE (CHOI YIP HOUSE) SOUTHEAST; (13) VP13 from SHUN ON ESTATE (ON CHUNG HOUSE) NORTH;

In general, the sensitivity of VSRs at the residential developments is considered to be 10.7.7medium to high, such as VP2, VP6, VP7, VP9, and VP10. They experience long duration and high frequency of view during both construction and operational phases, thus sensitivity is considered to be high.

The RIW will disturb the semi-natural woodland, resulting in loss of greenery. Construction 10.7.8and operation of new lane and flyover will change the visual experience to the VSR. Existing views may be blocked due to RIW. Additional road infrastructure and increased traffic flow will lead to degrade of view.

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There is high availability of alternative view to most of these residential receivers. It reduces 10.7.9the impact of VSR to the RIW.

Slope improvement work will be restored and greenery re-gained to compensate the loss of 10.7.10greenery due to the proposed road widening works. The detail mitigation measures will be discussed in paragraph 10.10.

The VSRs (VP4, VP12, and VP13) further from RIW are less sensitive as their views are 10.7.11mainly partial and far away from the RIW. The RIW are mainly constructed or operated at ground level, VSR which far away from RIW is less affected and less impact to its visual experience. They are considered to be of low sensitivity.

There are five travelling VSRs, namely VP1, VP3, VP5, VP8, and VP11. VP3, VP5 and VP11 10.7.12are of close proximity to RIW (ranging from 10 to 60m). However, since the extent and scale of the RIW is limited, these VSRs have partial views to the proposed works. Their duration of view is short and frequency is occasional. Therefore, their Sensitivity to Change is considered as medium. VP1 and VP8 are distant from RIW (ranging from 200 to 230m). Their views to RIW are also partial and duration of view is short. However, frequency of view for VP8 is occasional, whereas that of VP1 is rare. Thus, Sensitivity to Change for VP8 is medium and that for VP1 is low.

For residential VSRs, they will experience high frequency and long duration of views. The 10.7.13number of individuals being affected is also comparatively higher than travelling VSRs. They are considered to have higher sensitivity. Therefore, VP2, VP7, VP9 and VP10 are considered to be of high sensitivity. VP6 which includes less affected population is considered to be of medium sensitivity.

VP11 demonstrate the impact to the travellers from the new constructed flyover, as discussed 10.7.14above, the sensitively of VP11 is considered to be medium. However, from the photo record presented in Figure 10.15, VSR, Hong Wah Court, located next to new flyover will be subject to larger visual impact by the RIW. Most of the existing views of the lower floor receiver will be blocked during construction and operational phase. Mitigation measure to reduce the impacts of this VSR will be demonstrated and discussed in Section 10.10 and Figure 10.55 and 10.56.

The location of all VP is shown in Figure 10.11 to Figure 10.13 is described below along with 10.7.15its sensitivity, as summarized in Table 10.4. Representative photographs of the VSRs are presented in Figure 10.14 and Figure 10.15.

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Table 10.4 Visually Sensitive Receivers and Their Sensitivities

VSR ID. Visually Sensitive Receiver

(VSR) Type of VSRs

Approx. Level (mPD)

Number of Individuals

(Many/ Medium/Few)

Quality of Existing View

(Good/Fair/ Poor)

Availability of Alternative

Views (Yes/No)

Degree of Visibility (Full/

Partial/ Glimpse)

Duration of View (Long/

Medium/ Short)

Frequency of View

(Frequent/ Occasional/

Rare)

Sensitivity to

Change (Low, Medium,

High)

VSRs AT LOCAL LEVEL NEW CLEAR WATER BAY AND CLEAR WATER BAY ROAD (SHUN LEE ESTATE, CHOI WAN ESTATE, DISCIPLINES SERVCES QUARTERS, SHUN ON ESTATE)

VP1 NEW CLEAR WATER BAY ROAD SOUTHEAST

Travelling +135 Few Good Yes Partial Short Rare Low

VP2 SHUN LEE DISCIPLINED SERVICES QUARTERS (Block 6) NORTHEAST

Residential +120 Many Good Yes Partial Long Frequent High

VP3 SHUN CHING STREET SOURTHEAST

Travelling

+108

Medium

Good

Yes

Partial

Short

Occasional Medium

VP4 SHUN ON ESTATE (ON CHUNG HOUSE) NORTHWEST

Residential +198 Many Good Yes Partial Long Frequent Low

VP5 NEW CLEAR WATER BAY ROAD NORTHEAST

Travelling +167 Few Good Yes Partial Short Occasional Medium

VP6 SIENNA GARDEN SOUTH Residential +177 Medium Good Yes Partial Long Frequent Medium

VP7

SHUN LEE ESTATE (LEE

CHEUNG HOUSE)

NORTHEAST

Residential +198 Many Good Yes Partial Long Frequent High

VP8 ON SAN ROAD NORTH Travelling +174 Few Good Yes Partial Short Occasional Medium

VP9 PO TAI ESTATE (TAT

SHUN HOUSE) SOUTH Residential +119 Many Good Yes Partial Long Frequent High

VP12 CHOI FAI ESTATE (CHOI YIP HOUSE) SOUTHEAST

Residential +200 Many Good Yes Partial Long Frequent Low

VP13 SHUN ON ESTATE (ON

CHUNG HOUSE) NORTH Residential +198 Many Good Yes Partial Long Frequent Low

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VSR ID. Visually Sensitive Receiver

(VSR) Type of VSRs

Approx. Level (mPD)

Number of Individuals

(Many/ Medium/Few)

Quality of Existing View

(Good/Fair/ Poor)

Availability of Alternative

Views (Yes/No)

Degree of Visibility (Full/

Partial/ Glimpse)

Duration of View (Long/

Medium/ Short)

Frequency of View

(Frequent/ Occasional/

Rare)

Sensitivity to

Change (Low, Medium,

High)

VSRs AT LOCAL LEVEL TSANG KWAN O TUNNEL (SAU MAU PING SOUTH ESTATE, HING TIN ESTATE AND HONG WAH COURT, PO TAT ESTATE)

VP10 HING TIN ESTATE (CHOI TIN HOUSE) NORTH

Residential +200 Many Good Yes Partial Long Frequent High

VP11 LIN TAK ROAD NORTHEAST Travelling +99 Medium Good Yes Partial Short Occasional Medium

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10.8 Landscape Impact Assessment

Potential Sources of Impacts

The Project will involve various sources of landscape impact. The proposed development will 10.8.1create varying levels of impact on the landscape resources and landscape character areas at different stages of its lifetime. Potential landscape impact from above ground development and the footprint of construction works and operational facilities is concentrated upon for the purpose of the assessment.

Construction Phase

During the construction phase of the Project, potential impacts will result from the following: 10.8.2

Site clearance and tree and vegetation removal/transplantation;

Site formation and slope works including the creation of hoarding, cutting and filling;

Construction of new lane, widening existing road, noise barriers or flyover

Stockpiling of construction and demolition materials, including existing topsoil for reinstatement works, and storage of construction equipment and plants; and

Construction of new slope and reinforcement

Operational Phase

During the operation phase of the project, potential impacts will result from the 10.8.3following:

Operation of new road, noise barriers, flyover and slope improvement; and

Source of Landscape Impact and Magnitude of Change during the Construction and Operation before Implementation of Mitigation Measures

The magnitude of change, before implementation of mitigation measures, on the 10.8.4landscape resources and landscape character areas that would occur in the construction and operational phases are described below and tabulated in Table 10.5.

Table 10.5 Source of Landscape Impact and Magnitude of Change during the Construction Phase and Operational Phase

ID No.

Landscape Resources/ Landscape

Character Areas

Source of Impact Description of Impacts

LR1 Major Transport Route

LR1.1 Clear Water Bay Road

Construction of new lane, widening existing road, noise barriers or flyover; Construction of new slope and reinforcement

Existing trees are being affected by the proposed work. New lane, noise barriers, slope improvement and flyover are being constructed. Slope improvement works will be carried out. Species of conservation value at New Clear Water Bay Road (Incense Tree) will be affected.

LR1.2 New Clear Water Bay Road

LR1.3 Tseung Kwan O Road

LR2 Hillside Woodland

LR2 Hillside Woodland Negligible Negligible

LR3 Semi-natural Dense Hillside Vegetation

LR3.1 Vegetation around Fei Ngo Shan Road

Construction of new lane, widening existing road; Construction of new slope and reinforcement

Existing trees are being affected by the proposed work. New lane, noise barriers and slope cutting are being

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ID No.

Landscape Resources/ Landscape

Character Areas

Source of Impact Description of Impacts

constructed. Species of conservation value at Clear Water Bay Road (e.g. Incense Tree) will be affected.

LR3.2 Vegetation at North of Clear Water Bay Road

Construction of noise barriers; Construction of new slope and reinforcement.

Existing trees are being affected by the proposed work.

LR3.3

Vegetation at South of Clear Water Bay Road and Around New Clear Water Bay Road

Negligible Negligible

LR3.4

Vegetation of Merging Lane next to Shun Lee Estate

Construction of new lane, widening existing road, noise barriers

Existing trees are being affected by the proposed work.

LR3.5 Vegetation of Lam Tin Park

Negligible Negligible

LR3.6 Vegetation of Ma Yau Tong West Sitting-Out Area

Negligible Negligible

LR4 Urban Development Area

LR4 Urban Development Area

Negligible Negligible

LR5 Shun Lee Tsuen Sports Centre and Park

LR5 Shun Lee Tsuen Sports Centre and Park

Negligible Negligible

LR6 Quarry

LR6 Quarry Negligible Negligible LR7 Rural Development Area

LR7 Rural Development Area

Negligible Negligible

LR8 Engineered Slope along with Semi-natural Dense Hillside Vegetation

LR8.1 Engineered Slope along Clear Water Bay Road

Negligible Negligible

LR8.2

Engineered Slope along North of New Clear Water Bay Road

Negligible Negligible

LR8.3

Engineered Slope along South of New Clear Water Bay Road

Construction of new lane, widening existing road; Construction of new slope and reinforcement

Existing trees are being affected by the proposed work.

LR8.4 Engineered Slope along Lin Tak Road

Construction of new lane, widening existing road, noise barriers or flyover; Construction of new slope and reinforcement

Existing trees are being affected by the proposed work.

LR8.5 Engineered Slope along Sau Mau Ping Road

Construction of new lane, widening existing road, noise barriers or flyover; Construction of new slope and reinforcement

Existing trees are being affected by the proposed work.

LR9 Watercourses

LR9.1 Natural Watercourse

Negligible Negligible

LR9.2 Modified Watercourse

Construction of new lane; Construction of new slope and

LR temporarily lost, similar LR created after construction.

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ID No.

Landscape Resources/ Landscape

Character Areas

Source of Impact Description of Impacts

reinforcement LCA1 Peaks, Uplands and Hillsides LCA

LCA1 Peaks, Uplands and Hillsides LCA

Construction of new lane, widening existing road, noise barriers or flyover; Construction of new slope and reinforcement

Existing trees are being affected by the proposed work.

LCA4 Urban LCA

LCA4.1

Urban LCA (Shun Lee Tsuen)

Construction of new lane, widening existing road, noise barriers or flyover; Construction of new slope and reinforcement

Existing trees are being affected by the proposed work.

LCA4.2

Urban LCA (Sau Mau Ping)

Construction of new lane, widening existing road, noise barriers or flyover; Construction of new slope and reinforcement

Existing trees are being affected by the proposed work.

LCA5 Urban Parks LCA

LCA5 Urban Parks LCA Negligible Negligible

The landscape impacts with approximate quantity of the affected LRs and magnitude of 10.8.5change are summarized below:

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Table 10.6 Magnitude of Change of Landscape Resources

ID No. Landscape Resources

(LR)

Approximate Area of LRs

being Affected (m

2)

Estimated Total Number

of Trees of LRs

Approximate Number of

Trees being Affected

Compatibility of the Project with

the Surrounding Landscape

(High/ Medium/ Low)

Duration of Impacts

(Long/ Medium/ Short)

Reversibility of Change

(Yes/ No)

Magnitude of Change

LR1 Major Transport Route

LR1.1 Clear Water Bay Road 7750 20 0 Low Long No Intermediate

LR1.2 New Clear Water Bay Road

6200 37 19 Low Long No Intermediate

LR1.3 Tseung Kwan O Road 7850 133 53 Low Long No Intermediate

LR2 Hillside Woodland

LR2 Hillside Woodland Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR3 Semi-natural Dense Hillside Vegetation

LR3.1 Vegetation around Fei Ngo Shan Road

6750 531 306 Low Long No Large

LR3.2 Vegetation at North of Clear Water Bay Road

1250 320 92 High Medium Yes Intermediate

LR3.3

Vegetation at South of Clear Water Bay Road and Around New Clear Water Bay Road

Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR3.4 Vegetation of Merging Lane next to Shun Lee Estate

1150 69 9 High Short Yes Small

LR3.5 Vegetation of Lam Tin Park

Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR3.6 Vegetation of Ma Yau Tong West Sitting-Out Area

Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR4 Urban Development Area

LR4 Urban Development Area Negligible N/A Negligible Negligible Negligible Negligible Negligible

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ID No. Landscape Resources

(LR)

Approximate Area of LRs

being Affected (m

2)

Estimated Total Number

of Trees of LRs

Approximate Number of

Trees being Affected

Compatibility of the Project with

the Surrounding Landscape

(High/ Medium/ Low)

Duration of Impacts

(Long/ Medium/ Short)

Reversibility of Change

(Yes/ No)

Magnitude of Change

LR5 Shun Lee Tsuen Sports Centre and Park

LR5 Shun Lee Tsuen Sports Centre and Park

Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR6 Quarry

LR6 Quarry Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR7 Rural Development Area

LR7 Rural Development Area Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR8 Engineered Slope along with Semi-natural Dense Hillside Vegetation

LR8.1 Engineered Slope along Clear Water Bay Road

Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR8.2

Engineered Slope along North of New Clear Water Bay Road

Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR8.3

Engineered Slope along South of New Clear Water Bay Road

9500 755 260 Medium Medium No Intermediate

LR8.4 Engineered Slope along Lin Tak Road

10200 775 240 Medium Long No Intermediate

LR8.5 Engineered Slope along Sau Mau Ping Road

8900 865 506 Low Long No Large

LR9 Watercourse

LR9.1 Natural Watercourse Negligible N/A Negligible Negligible Negligible Negligible Negligible

LR9.2 Modified Watercourse <100 N/A N/A Yes Medium Yes Small

LCA1 Peaks, Uplands and Hillsides LCA

LCA1 Peaks, Uplands and Hillsides LCA

15750 1417 398 Low Long No Intermediate

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ID No. Landscape Resources

(LR)

Approximate Area of LRs

being Affected (m

2)

Estimated Total Number

of Trees of LRs

Approximate Number of

Trees being Affected

Compatibility of the Project with

the Surrounding Landscape

(High/ Medium/ Low)

Duration of Impacts

(Long/ Medium/ Short)

Reversibility of Change

(Yes/ No)

Magnitude of Change

LCA4 Urban LCA

LCA4.1 Urban LCA (Shun Lee Tsuen)

16850 1380 288 Low Long No Intermediate

LCA4.2 Urban LCA (Sau Mau Ping)

26950 2075 799 Low Long No Intermediate

LCA5 Urban Parks LCA

LCA5 Urban Parks LCA Negligible N/A Negligible Negligible Negligible Negligible Negligible

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The proposed road alignments work affecting the LRs and LCA are demonstrated at Figure 10.8.610.40 to Figure 10.45. The road alignment works are further elaborated in Section 2.2. The plan with proposed road alignment works are illustrated as below:

Figure 10.40 Impact on Landscape Resources (Sheet 1 of 3)

Figure 10.41 Impact on Landscape Resources (Sheet 2 of 3)

Figure 10.42 Impact on Landscape Resources (Sheet 3 of 3)

Figure 10.43 Impact on Landscape Characters Areas (Sheet 1 of 3)

Figure 10.44 Impact on Landscape Characters Areas (Sheet 2 of 3)

Figure 10.45 Impact on Landscape Characters Areas (Sheet 3 of 3)

Source of Landscape Impact and Magnitude of Change

10.8.7 LR1 – Major Transport Route, there are new lane, noise barriers and flyover are being constructed. The magnitude of change is expected to be small to intermediate.

10.8.8 LR3 (LR3.1, LR3.2 and LR3.4) - Semi- natural Dense Hillside Vegetation around transport route of RIW, existing trees are being affected by the proposed work and will be permanently removed or transplanted. The magnitude of change is varies from small to large.

10.8.9 LR8 (LR8.3, LR8.4 and LR8.5) - Engineered Slope along with Semi-natural Dense Hillside Vegetation, setting back of slope and existing trees are being affected by the proposed work and will be permanently removed or transplanted. The magnitude of change of LR8.3 and LR8.4 is expected to be intermediate. The magnitude of change of LR8.5 is expected to be large, since large area of this LR will be affected

10.8.10 LR9 (LR9.2) - Construction of new lane and new slope are being constructed. Modified watercourse will remove temporarily. Similar modified watercourse will be reconstructed. The magnitude of change is expected to be small.

10.8.11 LCA1 - Peaks, Uplands and Hillsides LCA, existing trees are being affected by the proposed work and will be permanently removed or transplanted. The magnitude of change is expected to be intermediate.

10.8.12 LCA4 - Urban LCA, existing trees are being affected by the proposed work and will be permanently removed or transplanted. The magnitude of change is expected to be intermediate.

10.8.13 In conclusion, the construction of RIW will affect approximately 1,485 nos. of trees, which will be felled and 24 nos. of trees are proposed to transplant.

10.9 Visual Impact Assessment

Potential Sources of Impacts

Major direct impacts including degrading of visual quality of existing views, change of viewing 10.9.1experience and visual incompatibility of the works with the surrounding visual context, will be resulted from the following activities during the construction phase:

Construction Phase

During the construction phase of the Project, potential impacts will result from the following: 10.9.2

Site clearance and tree removal/transplantation; Site formation works including the creation of hoarding, cutting and filling; Construction of new lane, widening existing road, noise barriers or flyover Stockpiling of construction and demolition materials, including existing topsoil for

reinstatement works, and storage of construction equipment and plants; and Construction of new slope and reinforcement

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Temporary structures including fencing; and Potential night-time glare arising from the lighting of construction activities after dark. Operational Phase

During the operational phase of the project, potential impacts will result from the following: 10.9.3

Operation of new road, noise barriers, flyover and slope improvement; and

Landscaping works (e.g. existing tree treatment, transplanted trees, planting at slope, compensatory planting).

Source of Visual Impact and Magnitude of Change during the Construction and Operation before Implementation of Mitigation Measures

The magnitude of change, before implementation of mitigation measures, on the VSRs that 10.9.4would occur in the construction and operational phase are described below and tabulated in Table 10.7. All impacts are adverse unless otherwise stated.

During the construction phase and operational phase, the unmitigated visual impacts are 10.9.5adverse in nature and mainly include degrading of visual quality of existing view. Nevertheless, alternative view is also available in all VSRs.

Magnitude of change also considers the distance between VSRs and proposed development. 10.9.6For those VSRs which are far away from the proposed works, magnitude of change will be considered to be small. Magnitude of change for VSRs which are close to the proposed development and with most of the existing views degraded are considered to be large.

VP3, VP5, VP6 and VP11 are of close proximity with RIW (ranging from 10 to 60 m). The 10.9.7existing view is partially blocked. The Magnitude of Change to the VSRs is considered to be large.

VP2 and VP9 are of moderate distance from RIW (80m). Their surrounding landscape are 10.9.8both of medium compatibility with the Project and there will be no blockage of view as a result of the proposed works. Therefore, the Magnitude of Change to the VSRs is considered to be intermediate.

Other VPs are distant from the RIW (ranging from 200 to 650m). Quality of existing views for 10.9.9VP1 and VP10 will degrade due to removal of large area of vegetation and vegetated slope respectively because of the proposed works. Their surrounding landscape are both of medium compatibility with the Project. The magnitude of change for these VSRs is considered to be intermediate.

For all other distant VPs, including VP4, VP7, VP8, VP12, and VP13, there will be no 10.9.10blockage to the existing views. The proposed works are highly compatible to the surrounding landscape. The magnitude of change for these VSRs is considered to be small.

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Table 10.7 Visually Sensitive Receivers and Their Magnitude of Change before Mitigation

VSR ID.

Visually Sensitive Receiver (VSR)

Vie

win

g D

ista

nc

e

(m)

Compatibility of the Project with the

Surrounding Landscape (High/ Medium/ Low)

Duration of Impacts (Long/ Medium/ Short)

Scale of Development (Large/ Medium/ Small)

Reversibility of Change (Yes/ No)

Potential Blockage of View

(Full/ Partial/ Nil)

Magnitude of Change (Large/ Intermediate/

Small/ Negligible)

Construction Operational Construction Operational Construction Operational Construction Operational Construction Operational Construction Operational

VSRs AT LOCAL LEVEL NEW CLEAR WATER BAY AND CLEAR WATER BAY ROAD (SHUN LEE ESTATE, CHOI WAN ESTATE, DISCIPLINES SERVCES QUARTERS, SHUN ON ESTATE)

VP1 NEW CLEAR WATER BAY ROAD SOUTHEAST

200 Medium Medium Medium Long Medium Medium Yes No Nil Nil

Intermediate

Intermediate

VP2

SHUN LEE DISCIPLINED SERVICES QUARTERS (Block 6) NORTHEAST

80 Medium Medium Medium Long Medium Medium Yes No Nil Nil

Intermediate

Intermediate

VP3 SHUN CHING STREET SOURTHEAST

10 Low Low Medium Long Medium Medium Yes No Partial Partial

Large

Large

VP4

SHUN ON ESTATE (ON CHUNG HOUSE) NORTHWEST

370 High High Medium Long Medium Medium Yes No Nil Nil

Small

Small

VP5 NEW CLEAR WATER BAY ROAD NORTHEAST

60 Low Low Medium Long Medium Medium Yes No Partial Partial

Large

Large

VP6 SIENNA GARDEN SOUTH 35 Low Low Medium Long Medium Medium Yes No Partial Partial

Large

Large

VP7

SHUN LEE ESTATE (LEE

CHEUNG HOUSE)

NORTHEAST

270 High High Medium Long Medium Medium Yes No Nil Nil Small Small

VP8 ON SAN ROAD NORTH 230 High High Medium Long Medium Medium Yes No Nil Nil Small Small

VP9 PO TAI ESTATE (TAT

SHUN HOUSE) SOUTH 80 Medium Medium Medium Long Medium Medium Yes No Nil Nil

Intermediate

Intermediate

VP12

CHOI FAI ESTATE

(CHOI YIP HOUSE)

SOUTHEAST

650 High High Medium Long Medium Medium Yes No Nil Nil

Small

Small

VP13 SHUN ON ESTATE (ON

CHUNG HOUSE) NORTH 550 High High Medium Long Medium Medium Yes No Nil Nil

Small

Small

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VSR ID.

Visually Sensitive Receiver (VSR)

Vie

win

g D

ista

nc

e

(m)

Compatibility of the Project with the

Surrounding Landscape (High/ Medium/ Low)

Duration of Impacts (Long/ Medium/ Short)

Scale of Development (Large/ Medium/ Small)

Reversibility of Change (Yes/ No)

Potential Blockage of View

(Full/ Partial/ Nil)

Magnitude of Change (Large/ Intermediate/

Small/ Negligible)

Construction Operational Construction Operational Construction Operational Construction Operational Construction Operational Construction Operational

VSRs AT LOCAL LEVEL TSANG KWAN O TUNNEL (SAU MAU PING SOUTH ESTATE, HING TIN ESTATE AND HONG WAH COURT, PO TAT ESTATE)

VP10 HING TIN ESTATE (CHOI TIN HOUSE) NORTH

250 Medium Medium Medium Long Medium Medium Yes No Nil Nil

Intermediate

Intermediate

VP11 LIN TAK ROAD NORTHEAST

10 Low Low Medium Long Medium Medium Yes No Partial Partial Large Large

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10.10 Landscape and Visual Mitigation Measures

The previous sections have identified the potential landscape and visual impacts due to the 10.10.1Road Improvement Work. It should be noted that design measures with intention to minimize overall landscape and visual impact due to the development have also been incorporated into the layout plans during planning and design stages. This section will describe the proposed landscape and visual mitigation.

To identify the mitigation measures, these may take the form of adopting alternative designs 10.10.2or revisions to the basic engineering and architectural design to prevent and/or minimize adverse impacts; remedial measures such as colour and textural treatment of building features; and compensatory measures such as the implementation of landscape design measures to compensate for unavoidable adverse impacts and to attempt to generate potentially beneficial long term impacts. The magnitude and sensitivity of change are summarized below:

Table 10.8 Summary Of The Magnitude And Sensitivity Of Change

ID No. Landscape Resources / Landscape Characters

Sensitivity

(Low, Medium, High)

Magnitude of change (Small, Intermediate,

Large)

Construction Operational Construction Operational

LR1 Major Transport Route

LR1.1 Clear Water Bay Road Low Low Intermediate Intermediate

LR1.2 New Clear Water Bay Road

High Low Intermediate Intermediate

LR1.3 Tseung Kwan O Road Low Low Intermediate Intermediate LR2 Hillside Woodland

LR2 Hillside Woodland High High Negligible Negligible LR3 Semi-natural Dense Hillside Vegetation

LR3.1 Vegetation around Fei Ngo Shan Road

High Medium Large Large

LR3.2 Vegetation at North of Clear Water Bay Road

Medium Medium Intermediate Intermediate

LR3.3

Vegetation at South of Clear Water Bay Road and Around New Clear Water Bay Road

High High Negligible Negligible

LR3.4 Vegetation of Merging Lane next to Shun Lee Estate

Low Low Small Small

LR3.5 Vegetation of Lam Tin Park

Low Low Negligible Negligible

LR3.6 Vegetation of Ma Yau Tong West Sitting-Out Area

Low Low Negligible Negligible

LR4 Urban Development Area

LR4 Urban Development Area Low Low Negligible Negligible LR5 Shun Lee Tsuen Sports Centre and Park

LR5 Shun Lee Tsuen Sports Centre and Park

Low Low Negligible Negligible

LR6 Quarry

LR6 Quarry Low Low Negligible Negligible LR7 Rural Development Area

LR7 Rural Development Area Medium Medium Negligible Negligible LR8 Engineered Slope along with Semi-natural Dense Hillside Vegetation

LR8.1 Engineered Slope along Clear Water Bay Road

High High Negligible Negligible

LR8.2

Engineered Slope along North of New Clear Water Bay Road

High High Negligible Negligible

LR8.3

Engineered Slope along South of New Clear Water Bay Road

High High Intermediate Intermediate

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ID No. Landscape Resources / Landscape Characters

Sensitivity

(Low, Medium, High)

Magnitude of change (Small, Intermediate,

Large)

Construction Operational Construction Operational

LR8.4 Engineered Slope along Lin Tak Road

High High Intermediate Intermediate

LR8.5 Engineered Slope along Sau Mau Ping Road

High High Large Large

LR9 Watercourse

LR9.1 Natural Watercourse High High Negligible Negligible

LR9.2 Modified Watercourse Low Low Small Small LCA1 Peaks, Uplands and Hillsides LCA

LCA1 Peaks, Uplands and Hillsides LCA

High High Intermediate Intermediate

LCA4 Urban LCA

LCA4.1 Urban LCA (Shun Lee Tsuen)

Low Low Intermediate Intermediate

LCA4.2 Urban LCA (Sau Mau Ping)

Low Low Intermediate Intermediate

LCA5 Urban Parks LCA

LCA5 Urban Parks LCA Medium Medium Negligible Negligible

Landscape and visual mitigation plan can be referred to Figure 10.16 to Figure 10.26. 10.10.3Sections shows the treatment on slope and existing road are provided at Figure 10.26A to 10.26C. Photomontage can be referred to Figure 10.2 to Figure 10.39.

The proposed landscape and visual mitigation measures for the RIW are listed in Tables 10.9 10.10.4and 10.10. Generally, all mitigation measures are to be implemented as early as possible.

Table 10.9 Construction Phase Mitigation Measures

ID No. Construction Phase Mitigation Measures Funding / Implementation

Maintenance/ Management Agency

CM1[3] All existing trees to be retained shall be carefully protected during construction.

Approximate 1418 nos. of trees will be retained within the project boundary.

Reference shall be made to DEVB TC (W) No.7/2015 and Guidelines on Tree Preservation during Development, GLTMS of DEVB

CEDD CEDD

CM2[2] Tree Transplantation

Detailed transplanting proposal will be submitted to relevant government departments for approval in accordance with ETWB TCW No. 29/2004, DEVB TC (W) No.7/2015 and “Guidelines on Tree Transplanting”, GLTMS of DEVB.

Final locations of approximate 24 nos. of transplanted trees shall be located within the project boundary.

CEDD CEDD

(Until handover to relevant government departments)

CM3[3] Erection of decorative screen hoarding for reducing visual impacts

CEDD CEDD

CM4 Measures to avoid / minimize impacts to flora species of conservation importance. Refer to para 10.10.5-10.10.9.

Details illustrated at Para. 10.10.5. to 10.10.8.

CEDD CEDD

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Table 10.10 Operational Phase Mitigation Measures

ID No. Operational Phase Mitigation

Measures Funding /

Implementation Maintenance/

Management Agency

OM1 [1], [2], [3]

Compensatory tree planting for loss of existing trees

(Compensation for loss of road side amenity )

Details illustrated at Para. 10.10.9. to 10.10.12.

CEDD LR3.1, LR3.2, LR3.3: HyD

LR1.2, LR3.4: LCSD

OM2 [1], [2], [3], [4]

Compensatory woodland planting

Details illustrated at Para. 10.10.13. to 10.10.15.

CEDD LR1.3, LR8.5: HyD

LR8.3: HyD, ArchSD

OM3 [1], [2], [3] [4]

Compensatory shrub mix planting

Details illustrated at Para. 10.10.16. to 10.10.17.

CEDD LR3.1, LR3.2: HyD

OM4 [1], [2], [3] [4]

Hydro-seeding planting with shrub seed mix

Details illustrated at Para. 10.10.18.

CEDD LR8.4: HyD

OM5 [1], [2], [3] [4]

Tall buffer advance screen tree / shrub / climber planting

Details illustrated at Para. 10.10.19. to 20.

CEDD LR3.1, LR3.2: HyD

OM6 [1], [2], [3]

Planting of road verges, central divider and around structures

Details illustrated at Para. 10.10.21.

CEDD LR8.5, LR1.3, LR4: HyD

LR1.1, LR3.3, LR3.4, LR8.3: LCSD

OM7 [3]

Reinstate modified watercourse

Details illustrated at Para. 10.10.22.

CEDD DSD

OM8 [3]

Provision of visually pleasing aesthetic treatment on noise barriers ( with climbers provided if space available) and enclosures

Details illustrated at Para. 10.10.23.

CEDD

HyD

OM9 [3]

Hard Landscape Treatment Carriageway, Structures and Roadside Furniture

(for example, pleasing aesthetic finishing of retaining wall) Details illustrated at Para. 10.10.24.

CEDD

HyD

OM10 [1], [2], [3] [4]

Planting of toe planters for slope enhancement

Details illustrated at Para. 10.10.25 to 27.

CEDD

LCSD

OM11 [1], [2], [3] [4]

Planting of berm planters/ planting strips for slope enhancement

Details illustrated at Para. 10.10.28 to 30.

CEDD

HyD

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Notes: [1] The maintenance of the interim greening measures will be undertaken by contractor for the first 36-month

establishment period after completion of implementation of all landscape mitigation measures. In the case that the site is still not allocated after the establishment period, CEDD would liaise with relevant government departments to agree on the subsequent maintenance agent of the interim greening measures. Contractor would be responsible for the maintenance of the interim greening measures before any agreement is made.

[2] The management and maintenance agencies of mitigation measures have been identified in accordance with DEVB TCW 6/2015. The agreement and approval of the implementation, management and maintenance agencies of the Project will be sought from relevant parties during detailed design stage of the project. Contractor would be responsible for maintenance and management of trees, vegetation and the associated facilities (e.g. irrigation system) within the permanent site boundary. The maintenance matrix and responsible parties for trees outside the permanent site boundary are yet to be confirmed. To facilitate with the confirmation process, CEDD would be responsible for the maintenance works before any agreement is made.

[3] Mitigation measures refer to Good Site Practices. [4] All slope planting should be complied with GEO publication No. 1/2011 - Technical Guidelines on Landscape

Treatment for Slopes.

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Mitigation measure for Flora Species of Conservation Importance (CM4)

During the Feasibility Stage detailed evaluation of different alignments and structural forms 10.10.5was undertaken to arrive at the optimum layouts for the RIWs. This included evaluation of the potential ecological impacts arising from various road alignment options. As such, the preferred options (e.g. Option B and D) have resulted in reduced ecological impacts compared to other options as they minimise habitat loss and direct impacts to species of conservation importance (refer to Section 3.2).

However, ecological impacts could not be completely avoided. Two flora species of 10.10.6conservation importance (Incense Tree and Luofushan Joint-fir) would be subject to direct impacts (e.g. northern side of Clear Water Bay Road and southern side of New Clear Water Bay Road). Therefore, prior to the commencement of the construction works, a vegetation survey should be conducted by a qualified ecologist / botanist / arborist within the Project Site boundary to:

1) Ascertain the presence of, as well as update the conditions, number and locations of the flora species of conservation importance identified

2) Determine the number and locations of the affected individuals of flora species of conservation importance and evaluate the suitability and / or practicality of the transplantation.

A Transplantation Proposal should be prepared by a qualified ecologist / botanist / arborist 10.10.7with detailed findings of the vegetation survey (i.e. number and locations of the affected individuals, assessment of the suitability and / or practicality of the transplantation) and locations of receptor site(s), transplantation methodology, implementation programme of transplantation, post-transplantation monitoring and maintenance programme. The proposal should be submitted to and approved by AFCD prior to commencement of any works (including ground investigation).(Refer to Section 9.13.4 – 9.13.5).

Preservation or transplanting of the trees or vegetation will be favourably considered with 10.10.8reference to DEVB TC(W) 7/2015 Tree Preservation, Guidelines on Tree Preservation during Development, GLTMS of DEVB, Guidelines on Tree Transplanting, GLTMS of DEVB, and other relevant government guidelines. Detailed proposals and method statements will be submitted to relevant government agencies for review and approval.

Compensatory tree planting for loss of existing trees (OM1)

The construction of RIW will affect approximately 1,485 nos. of trees, which will be felled, 10.10.9including 1,432 numbers of fell trees are located on the slope and 53 numbers of trees are non- slope trees. Also, 24 nos. of trees are proposed to transplant.

To compensate the loss of trees on slope, woodland planting is proposed in other mitigation 10.10.10measures (OM2) which are slope with 35 degrees or below according to GEO publication No. 1/2011. The details are illustrated below.

To compensate the 53 numbers of non slope trees, minimum of 53 numbers of heavy 10.10.11standard trees will be compensated which to provide compensatory planting in a ratio of not less than 1:1 in terms of number (i.e. the number of compensatory tree within the site shall not be lower than the number of trees felled including dead trees and trees of undesirable species) in accordance with DEVB TCW No. 7/2015 – Tree Preservation.

Heavy standard trees are proposed to plant at non- slope area to maximize the greening of 10.10.12the surrounding. Species like Cassia spp., Bischofia spp. or Bauhinia spp. which are commonly used at urban planting design are recommended for greenery and compensate the loss non- slope trees.

Compensatory Woodland Planting (OM2)

As mention above, woodland planting is recommended to accommodate the compensation of 10.10.13loss of slope trees. Slopes with 35 degrees or below are proposed to accommodate woodland planting as far as possible. Also, sufficient of soil depth is required for future tree growth.

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Compensatory woodland planting is applicable at Sau Mau Ping Road (LR8.5, LR1.3), and 10.10.14New Clear Water Bay Road and Shun Lee Tsuen Road (LR 8.3) because the slope is gentle (under 35 degree) and soil depth is of a minimum 800mm. Refer to Table 2.3 in GEO publication No. 1/2011 - Technical Guidelines on Landscape Treatment for Slopes. The goal of the proposed compensatory woodland planting is to reinstate the affected existing landscape resources – semi-natural dense hillside vegetation.

Majority of proposed planting will be whip trees and native species as well as naturalised 10.10.15species to enhance the ecological value, e.g. Litsea glutinosa, Schefflera heptaphylla etc.. Aim to create a vegetation cover that will gradually integrate with the surrounding natural vegetation. Also, The selected native species also encourage biodiversity of both fauna and flora within the woodland and the surrounding environment.

Compensatory Shrub-mix Planting (OM3)

Unfortunately, the affected slope is moderately steep (between 35 to 40 degree) and soil 10.10.16depth is approximately 450mm in J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road (LR3.1, LR3.2), therefore, compensatory shrub-mix planting is considered as a sensible mitigation measure taken into account the site constraints. Refer to Table 2.3 in GEO publication No. 1/2011 - Technical Guidelines on Landscape Treatment for Slopes. The goal of the proposed compensatory shrub-mix planting is to reinstate the affected existing landscape resources – semi-natural dense hillside vegetation.

Majority of proposed planting will be native species as well as naturalised species to enhance 10.10.17the ecological value, e.g. Rhaphiolepis indica, Rhodomyrtus tomentosa etc.. Aim to create a vegetation cover that will gradually integrate with the surrounding natural vegetation. Also, The selected native species also encourage biodiversity of both fauna and flora within the woodland and the surrounding environment.

Hydroseeding Planting with shrub seed mix (OM4)

Hydroseeding planting (grass and shrub seeds) is proposed on rock face along Sau Mau Ping 10.10.18Road (Lin Tak Road) (LR8.4) because the steep rock slope is of a significant level difference and large planting on top of rock slope might impose potential hazard to adjacent road users. Safety concern shall be fully considered.

Tall Buffer Advance Screen Tree/ Shrub / Climber Planting (OM5)

Tall Buffer Advance Screen Tree/ Shrub / Climber Planting is proposed at New Clear Water 10.10.19Bay Road and Shun Lee Tsuen Road (LR3.4), and J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road (LR3.2). The proposed trees are heavy standard tree for screening off the proposed noise barrier from the adjacent residents.

Species with tall and bushy from will be proposed to provide screening to the surrounding 10.10.20affected area, e.g. Melaleuca leucadendron, Eucalyptus spp.

Planting of Road Verges, Central Divider and around Structures (OM6)

Planting of Road Verges, Central Divider and around Structures is proposed at Sau Mau Ping 10.10.21Road (LR4, LR 8.4, LR8.5), J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road (LR1.1, LR3.3), and New Clear Water Bay Road and Shun Lee Tsuen Road (LR1.2, LR3.4, LR8.3). Common urban shrub/ climber or groundcover, e.g. Duranta spp., Parthenocissus tricuspidata are proposed to maximise greening opportunities in accordance with DEVB TC(W) 2/2012 - Allocation of Space for Quality Greening on Roads.

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Reinstatement of Affected Modified Watercourse (OM7)

Reinstatement of Affected Modified Watercourse is proposed at J/O Clear Water Bay Road 10.10.22and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road (LR9.2). The disturbed existing modified watercourse will be reinstated.

Provision of Visually Pleasing Aesthetic Treatment on Noise Barriers (OM8)

Provision of Visually Pleasing Aesthetic Treatment on Noise Barriers is proposed at Sau Mau 10.10.23Ping Road (LR1.3, LR8.5), J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road (LR1.1), and New Clear Water Bay Road and Shun Lee Tsuen Road (LR1.2). Translucent plexiglass with aesthetic pattern will be fully considered for design of noise barrier to enhance visual interest.

Hard Landscape Treatment for Carriageway, Structures and Roadside Furniture (OM9)

Hard Landscape Treatment for Carriageway, Structures and Roadside Furniture is proposed 10.10.24at Sau Mau Ping Road (LR8.5), J/O Clear Water Bay Road and On Sau Road and J/O Clear Water Bay Road and New Clear Water Bay Road (LR1.1, LR3.1, LR3.2), and New Clear Water Bay Road and Shun Lee Tsuen Road(LR1.2, LR3.4, LR8.3). Surface treatment to retaining wall and noise barrier structures will be carefully designed to blend in the existing context.

Planting of toe planters for slope enhancement (OM10)

Planting of toe planters at rock face along Sau Mau Ping Road (Lin Tak Road) (LR8.4) is 10.10.25proposed as a landscape measure to reduce the visual impact to the surrounding residential area.

Introduction of toe planters for planting of trees/ shrubs/ climbers/ bamboo was considered 10.10.26where rock face with 70 degrees or below. The width of planters and numbers/ location of planting are subjected to site condition/ detailed design and agreement from maintenance parties. Indicative location is shown in Figure 10.16 and Figure 10.21. Sections can be referred to Figure 10.57.

Tree species (e.g. Tabebuia spp. or Cinnamomum burmanni) with narrow canopy will be 10.10.27selected to adapt to the limited planting space. Climbers will be planted as much as possible to gain the highest greening coverage to the rock face, e.g. Parthenocissus tricuspidata.

Planting of berm planters/ planting strips for slope enhancement (OM11)

Planting of berm planters/ planting strips on slope berms along Sau Mau Ping Road (Lin Tak 10.10.28Road) (LR8.4) is proposed as a landscape measure to reduce the visual impact to the surrounding residential area.

Introduction of berm planters or berm planting strips for planting of trees/ shrubs/ climbers/ 10.10.29bamboo at slope berms are considered. The location and numbers of berm planters and planting species are subjected to site condition/ detailed design and agreement from maintenance parties. Indicative location is shown in Figure 10.16 and Figure 10.21. Sections can be referred to Figure 10.57.

The selected species for tree planting on berm planters is comply with the recommendation 10.10.30from GEO publication No. 1/2011. Native and small size species of low maintenance requirement (e.g. Ficus hispida or Polyspora axillaris) are suggested to adapt to the limited planting space. Climbers will be planted on planting strips as much as possible to gain the highest greening coverage to the rock face, e.g. Parthenocissus tricuspidata.

Compensatory Proposal for RIW

The construction of RIW will affect approximately 1,485 nos. of trees, which will be felled and 10.10.3124 nos. of trees are proposed to be transplanted.

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Due to numerous site constraints at slope areas, the tree compensation requirement of 1:1 in 10.10.32terms of number and heavy standard size of trees is not feasible. Therefore, tree whips and shrub mix planting are proposed subject to the gradient of the proposed new slopes.

A minimum of 53 numbers of heavy standard trees shall, therefore, be required to 10.10.33compensate the loss trees for the non-slope areas, and will be proposed to be planted along the roadside amenity areas and the non-slope areas behind the retaining wall as screening. The proposed species are commonly used in urban environment so as to reinstate and enhance the surrounding landscape value. The proposed location is shown in Figure 10.16 to Figure 10.26.

Total area of 18,400m2 will be planted with proposed compensatory woodland planting with 10.10.34

tree whips. Approximately 18,400 whip trees are proposed to reinstate the greenery of slopes. The proposed location for compensatory woodland mix is shown at Figure 10.16 to Figure 10.26 and description on Para. 10.10.14 to 10.10.17.

The total number of compensatory trees is larger than the total number of loss trees. As 10.10.35shown in the table below, the compensatory proposal shall be agreed prior to commencement of the work.

Summary of Slope Trees and Non Slope Trees being affected and proposed treatment are listed below:

Total Number of Trees to be

Felled/ Removed Proposed treatment

Slope Trees 1,432 Approximately 18,400 whip

trees are proposed for reinstate the greenery of slopes (OM2)

Non Slope Trees 53 minimum of 53 numbers of heavy standard trees will be

compensated (OM6)

Total number of trees will be compensated 18,453

Programme of Implementation of Landscape and Visual Mitigation Measures

The Construction Phase measures listed above should be adopted from the commencement 10.10.36of construction and should be in place throughout the entire construction period. The Operational Phase measures listed above should be adopted during the detailed design, and be built as part of the construction works so that they are in place at the date of commissioning of the Project.

10.11 Residual Impacts

Prediction of Significance of Landscape Impacts

The potential significance of the landscape impacts during the construction and operational 10.11.1phases, before and after mitigation, is provided in Table 10. 11. This assessment follows the proposed methodology and assumes that the appropriate design measures incorporated in the development layout and the mitigation measures identified in Tables 10.9 and Table 10.10 would be implemented and that the full effect of the soft landscape mitigation measures would be realized after 10 years.

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Residual landscape impacts in Construction Phase

In the Construction Phase, after the implementation of the proposed mitigation measures, 10.11.2there will still be some residual landscape impacts of moderate to substantial significance. They are described below.

Residual Impacts on Landscape Resources/ Landscape Character Areas

Impact on Semi-natural Dense Hillside Vegetation

Based on the tree survey, approximately 5,000 trees are found within the study area. The 10.11.3removed trees would be transplanted or felled depending on their health condition, amenity value and survival rate after transplanting. The compensatory tree planting or new landscape works as mitigation measures to the loss of trees are proposed for the development. Those impacts can be restored in the future to regenerate nature woodland. Therefore, overall residual impacts on semi-natural dense hillside vegetation are limited.

Impact on engineered slope

Widening of road including the reconstruction of slope nearby, the existing slope with semi-10.11.4natural dense hillside vegetation may affected and compensate by future slope improvement work. Man-made slope is shown instead of natural hillside vegetation before the vegetation become mature.

Rock slope at Lin Tak Road is being set back for construction of new fly over and road 10.11.5widening, vegetation on slope is removed. The rock slope is being set back at 70-80 degree for construction of new fly over and provision of laybys. Introduction of toe planters for planting of trees/ shrubs/ climbers/ bamboo was considered where rock face with 70 degrees or below. Berm planting is also proposed as a landscape measures to reduce the visual impact to the surrounding residential area.

Hydro-seeding and woodland mix planting on the top of slope to reinstate greening will be 10.11.6applied. Natural succession may reinstate the greening of the rock slope after 10 years.

Impact on modified watercourse

The modified watercourse will be removed temporally due to new lane construction and will 10.11.7be reinstated after the works. Since modified watercourse is considered of low conversation value and ecological value, the overall residual impact to this modified watercourse is acceptable.

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Table 10.11 Significance of Landscape Impacts in Construction and Operational Phases

ID No. Landscape Resources / Landscape Characters

Sensitivity (Low, Medium, High)

Magnitude of change

Impact Significance Threshold BEFORE Mitigation (Insubstantial, Slight,

Moderate, Substantial) Recommended

Mitigation Measures

Residual Impact Significance Threshold AFTER Mitigation

(Insubstantial, Slight, Moderate, Substantial)

Construction Operational Construction Operational Construction Operational Construction Operational

DAY 1 Year 10

LR1 Major Transport Route

LR1.1 Clear Water Bay Road Low Low

Small Small Slight Slight CM1, OM6, OM8, OM9

Insubstantial Insubstantial Insubstantial

LR1.2 New Clear Water Bay Road

High Low Intermediate Intermediate Moderate Slight CM1, CM2, OM1, OM6, OM8, OM9

Slight Insubstantial Insubstantial

LR1.3 Tseung Kwan O Road Low Low

Intermediate Intermediate Slight Slight CM1, CM2, CM3, OM1, OM2, OM9

Insubstantial Insubstantial Insubstantial

LR2 Hillside Woodland

LR2 Hillside Woodland High High Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A LR3 Semi-natural Dense Hillside Vegetation

LR3.1 Vegetation around Fei Ngo Shan Road

High Medium Large Large Substantial Substantial CM1, CM2, OM1, OM3, OM5, OM7, OM9

Moderate Moderate Slight

LR3.2 Vegetation at North of Clear Water Bay Road

Medium Medium Intermediate Intermediate Moderate Moderate CM1, CM2, OM1, OM3, OM5, OM9

Slight Slight Insubstantial

LR3.3

Vegetation at South of Clear Water Bay Road and Around New Clear Water Bay Road

High High Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR3.4 Vegetation of Merging Lane next to Shun Lee Estate

Low Low Small Small Slight Slight CM1, CM2, OM1,

OM5 Insubstantial Insubstantial Insubstantial

LR3.5 Vegetation of Lam Tin Park

Low Low Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR3.6 Vegetation of Ma Yau Tong West Sitting-Out Area

Low Low Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR4 Urban Development Area

LR4 Urban Development Area Low Low Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR5 Shun Lee Tsuen Sports Centre and Park

LR5 Shun Lee Tsuen Sports Centre and Park

Low Low Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR6 Quarry

LR6 Quarry Low Low Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR7 Rural Development Area

LR7 Rural Development Area Medium Medium Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR8 Engineered Slope along with Semi-natural Dense Hillside Vegetation

LR8.1 Engineered Slope along Clear Water Bay Road

High High Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR8.2

Engineered Slope along North of New Clear Water Bay Road

High High Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR8.3

Engineered Slope along South of New Clear Water Bay Road

High High Intermediate Intermediate Moderate Moderate CM1, OM2, OM6,

OM9 Slight Slight Insubstantial

LR8.4 Engineered Slope along Lin Tak Road

High High Intermediate Intermediate Moderate Moderate CM1, OM4, OM10,

OM11 Slight Slight Insubstantial

LR8.5 Engineered Slope along Sau Mau Ping Road

High High Large Large Substantial Substantial CM1, CM2, OM2 Moderate Moderate Slight

LR9 Watercourse

LR9.1 Natural Watercourse High High Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

LR9.2 Modified Watercourse Low Low Small Small Slight Slight OM7 Insubstantial Insubstantial Insubstantial

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ID No. Landscape Resources / Landscape Characters

Sensitivity (Low, Medium, High)

Magnitude of change

Impact Significance Threshold BEFORE Mitigation (Insubstantial, Slight,

Moderate, Substantial) Recommended

Mitigation Measures

Residual Impact Significance Threshold AFTER Mitigation

(Insubstantial, Slight, Moderate, Substantial)

Construction Operational Construction Operational Construction Operational Construction Operational

DAY 1 Year 10

LCA1 Peaks, Uplands and Hillsides LCA

LCA1 Peaks, Uplands and Hillsides LCA

High High Intermediate Intermediate Moderate Moderate CM1, CM2, OM1, OM3, OM5, OM6, OM7, OM8, OM9

Slight Slight Insubstantial

LCA4 Urban LCA

LCA4.1 Urban LCA (Shun Lee Tsuen)

Low Low Intermediate Intermediate Slight Slight CM1, CM2, OM1, OM2, OM5, OM6, OM8, OM9

Insubstantial Insubstantial Insubstantial

LCA4.2 Urban LCA (Sau Mau Ping)

Low Low Intermediate Intermediate Slight Slight CM1, CM2, OM2, OM4, OM6, OM8, OM9

Insubstantial Insubstantial Insubstantial

LCA5 Urban Parks LCA

LCA5 Urban Parks LCA Medium Medium Negligible Negligible Insubstantial Insubstantial N/A N/A N/A N/A

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Prediction of Significance of Visual Change

An assessment of the potential significance of the visual change during the construction and 10.11.8operational phases, before and after mitigation, is listed in detail in Table 10.11. This follows the proposed methodology and assumes that the appropriate construction and operational mitigation measures identified in Section 10.10 above would be implemented, and that the full effect of the soft landscape mitigation measures would be realized after ten years. The residual impacts after mitigation are briefly described below.

Residual Visual Impacts in Construction Phase

In the construction phase, the impact significance threshold before mitigation for the VSRs are 10.11.9mostly substantial with six in total. The impact significance threshold before mitigation for four VSRs are moderate, and three are insubstantial.

These adverse impacts are alleviated with the implementation of the appropriate mitigation 10.11.10measures, including incorporation of decorative hoarding. Thus, adverse residual impacts are expected to be moderate for six of the VSRs and slight for four of the VSRs. Residual impacts of the remaining three remain as insubstantial.

The residual impacts ranges from moderate to insubstantial. However, since alternative view 10.11.11is available for all the VSRs, the residual visual impacts in construction phase of RIW are generally acceptable.

Residual Visual Impact in Operational Phase

In the operational phase, the impact significance threshold before mitigation for the VSRs are 10.11.12mostly substantial with six in total. The impact significance threshold before mitigation for four VSRs are moderate, and three are insubstantial.

These adverse impacts are alleviated with the implementation of the appropriate mitigation 10.11.13measures in Day 1. Thus, Day 1 adverse residual impacts are expected to be moderate for six of the VSRs and slight for four of the VSRs. Day 1 Residual impacts of the remaining three remain as insubstantial.

Vegetated semi-natural dense hillside vegetation on the existing slope or along the existing 10.11.14roads will be restored by new planting. New planting will regenerate woodland in about 10 years after completion of the proposed works. The visual experience of the VSRs will be restored. Thus, residual impact in operational phase for most VSRs will further be reduced to insubstantial 10 years after completion of the proposed works. Only 4 of the VSRs will have slight residual impacts.

Residents of lower floors of Hong Wah Court next to the junction of Sau Mau Ping Road / Lin 10.11.15Tak Road will suffer from large visual impact from the new construction of flyover. Most of the existing view of lightly vegetated rock slope of the residents of lower floors facing the flyover will be permanently blocked by the works at operational phase.

To mitigate the impact, pleasing design of noise barrier and planting on the edge of flyover 10.11.16will be applied to soften the impact from the structure. Nevertheless, residual visual impact to residents living in lower floors of Hong Wah Court is substantial.

Consideration of different design or measures to minimize the impact has been made. 10.11.17Although residual impact is unavoidable, the proposed work will bring benefits to the society in the long term, including the following:

- To alleviate the traffic problem and provide free flow carriageway from Lin Tak Road and Sau Mau Ping Road to Tseung Kwan O Road slip road through a junction modification work at Sau Mau Ping Road/ Lin Tak Road and a construction of flyover;

- To resolve the blockage problem in the through traffic at Lin Tak Road by lengthening the roadside lay-by at Lin Tak Road near Hong Wah Court and Hing Tin Estate for accommodation of on-street pick-up/drop-off activities;

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- To provide a U-turn facility at a nearer distance near the junction of Clear Water Bay Road / On Sau Road; and

- To solve the queuing problem at the bottleneck location at New Clear Water Bay Road (Kowloon-bound) near Shun Lee Tsuen Road by widening the section of New Clear Water Bay Road (Kowloon-bound) from one lane to two lanes.

Design intention and consideration of alternatives are provided at Section 2 and 3. 10.11.18

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Table 10.12 Significance of Visual Change in the Construction and Operational Phases

VSR Type &

ID.

Key Visually Sensitive Receiver

(VSR)

Main Source of

Visual Change

Magnitude of Change (Negligible, Small,

Intermediate, Large) Receptor Sensitivity

(Low, Medium, High)

Impact Significance Threshold Before

Mitigation

(Insubstantial, Slight, Moderate, Substantial)

Recommended Mitigation Measures

Residual Impact Significance Threshold After Mitigation

(Insubstantial, Slight, Moderate, Substantial)

Construction Operational

Construction Operational Construction Operational Construction Operational DAY 1 YEAR 10

VP1 NEW CLEAR WATER BAY ROAD SOUTHEAST

Road widening, New noise

barrier, Slope

works, New lanes, New

flyover

Intermediate

Intermediate

Low Low Moderate Moderate CM1, CM2, CM3, OM1, OM2, OM5, OM6, OM8, OM9

Slight Slight Insubstantial

VP2

SHUN LEE DISCIPLINED SERVICES QUARTERS (Block 6) NORTHEAST

Intermediate

Intermediate

High High Moderate Moderate CM1, CM2, CM3, OM1, OM2, OM5, OM6, OM8, OM9

Moderate Moderate Insubstantial

VP3 SHUN CHING STREET SOURTHEAST

Large

Large Medium Medium Substantial Substantial

CM1, CM2, CM3, OM1, OM5, OM8,

OM9 Moderate Moderate Slight

VP4 SHUN ON ESTATE (ON CHUNG HOUSE) NORTHWEST

Small

Small Low Low Insubstantial Insubstantial

CM1, CM2, CM3, OM1, OM2, OM5, OM6, OM8, OM9

Insubstantial Insubstantial Insubstantial

VP5 NEW CLEAR WATER BAY ROAD NORTHEAST

Large Large Medium Medium Substantial Substantial CM1, CM2, CM3, OM1, OM3, OM5, OM6, OM8, OM9

Moderate Moderate Slight

VP6 SIENNA GARDEN SOUTH

Large

Large Medium Medium Substantial Substantial

CM1, CM2, CM3, OM1, OM3, OM5,

OM8, OM9 Moderate Moderate Insubstantial

VP7 SHUN LEE ESTATE

(LEE CHEUNG

HOUSE) NORTHEAST

Small Small High High Moderate Moderate CM1, CM2, CM3, OM1, OM3, OM5, OM6, OM8, OM9

Slight Slight Insubstantial

VP8 ON SAN ROAD NORTH Small Small Medium Medium Moderate Moderate CM1, CM2, CM3, OM1, OM3, OM5, OM6, OM8, OM9

Slight Slight Insubstantial

VP9

PO TAI ESTATE

(TAT SHUN

HOUSE) SOUTH

Intermediate Intermediate High High Substantial Substantial CM1, CM2, CM3, OM2, OM5, OM6,

OM8, OM9 Moderate Moderate Slight

VP10

HING TIN ESTATE (CHOI TIN HOUSE) NORTH

Intermediate Intermediate High High Substantial Substantial CM1, CM2, CM3, OM2, OM5, OM6,

OM8, OM9 Moderate Moderate Insubstantial

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VSR Type &

ID.

Key Visually Sensitive Receiver

(VSR)

Main Source of

Visual Change

Magnitude of Change (Negligible, Small,

Intermediate, Large) Receptor Sensitivity

(Low, Medium, High)

Impact Significance Threshold Before

Mitigation

(Insubstantial, Slight, Moderate, Substantial)

Recommended Mitigation Measures

Residual Impact Significance Threshold After Mitigation

(Insubstantial, Slight, Moderate, Substantial)

Construction Operational

Construction Operational Construction Operational Construction Operational DAY 1 YEAR 10

VP11 LIN TAK ROAD

NORTHEAST

Large Large Medium Medium Substantial Substantial CM1, CM2, CM3, OM6, OM8, OM9,

OM11 Moderate Moderate Slight

VP12

CHOI FAI ESTATE (CHOI YIP HOUSE) SOUTHEAST

Small

Small Low Low Insubstantial Insubstantial CM1, CM2, CM3, OM1, OM2, OM5, OM6, OM8, OM9

Insubstantial Insubstantial Insubstantial

VP13

SHUN ON ESTATE (ON CHUNG HOUSE) NORTH

Small

Small Low Low Insubstantial Insubstantial CM1, CM2, CM3, OM1, OM3, OM5, OM6, OM8, OM9

Insubstantial Insubstantial Insubstantial

Note: All impacts are adverse unless otherwise noted with Beneficial

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10.12 Conclusion

Based on the broad-brush tree survey conducted, it is estimated that approximately 1,485 nos. 10.12.1of trees would need to be felled and 24 nos. of trees would need to be transplanted. Others will be retained on site. Compensatory proposal for different landscape resources will be applied to compensate for the loss of existing trees. The overall residual impact on trees is considered acceptable with implementation of the recommended mitigation measures.

Semi-natural dense hillside woodland would be set back for widening the existing roads. The 10.12.2impacts on the affected areas are considered to be acceptable as the existing green backdrop of the surrounding area would not be severely damaged or changed over time. Appropriate mitigation measures are recommended to enhance the greening effects and facilitate regeneration of woodland in the future.

The slope at Lin Tak Road would be set back for the construction of the new flyover and road 10.12.3widening. Vegetation on the slope will be removed. Residents of lower floors of Hong Wah Court next to the junction of Sau Mau Ping Road / Lin Tak Road will suffer from large visual impact. To alleviate the impact from the hard structure, the noise barrier will adopt a pleasing design and planting will be applied to the edge of the flyover. Toe planters and berm planting have been proposed as landscape mitigation measures to further reduce the visual impact on the surrounding residential area. In summary, the residual visual impact to residents living in lower floors of Hong Wah Court would be minimized.

The work areas for the RIW are generally at ground level. The visual experience of the VSRs 10.12.4will not change much as alternative view is available and the change will be even less significant with the implementation of mitigation measures.

In summary, the landscape and visual impacts from the Project are considered to be 10.12.5generally acceptable with the implementation of appropriate mitigation measures.