Urban Design and Landscape Plan Stage 1B

Transcription

1 Urban Design and Landscape Plan Stage 1B Prepared by Conybeare Morrison International Pty Ltd Architecture + Master Planning + Urban Design William Street East Sydney NSW 2011 T: E: mail@cmplus.com.au August 2017 NCX-CM AU-PL-0001

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5 Glossary AHD Australian Height Datum AS Australian Standards BCA Building Code of Australia CBD Central Business District CCTV Closed Circuit TV CEMP Construction Environmental Management Plan GPT Gross Pollutant Trap ICR Incident Control Room MCoA Minister s Conditions of Approval MOC Motorway Operations Complex NATA National Association of Testing Authorities OHD Over Height Detector RMS Roads and Maritime Services SS Stainless Steel SSI State Significant Infrastructure SPIR Submissions and Preferred Infrastructure Report SWTC Scope of Works and Technical Criteria UDLP Urban Design and Landscape Plan Boulevard Boulevards are arterial routes with large street trees and have a continuous and consistent landscape treatment. The landscape treatment often emphasises a formal design pattern. Overhead utilities are eliminated or reduced along a boulevard. Features include widened footpaths, special footpath treatments, crosswalk paving materials and other public amenities. Parkway A continuous freeway which traverses a park or parkland setting in an urban environment. In this submission the word is interchangeable with the description of a boulevard. CFC Compressed Fibre Cement CPTED Crime Prevention Through Environmental Design DCP Development Control Plan DDA Disabilities and Discrimination Act DP&E Department of Planning and Environment ECR Emergency Control Room EIS Environmental Impact Statement FFL Finished Floor Level GMS Galvanised Mild Steel OHS Over Height Sign PAR Preferred Activity Report PHY Pacific Highway PHR Pennant Hills Road PMF Probable Maximum Flood POS Private Open Space Project Co Project Company Group REMMs Revised Environmental Mitigation Measures RL Reduced Levels ULSD Urban and Landscape Design VMS Variable Message Sign WQP Water Quality Pond Gateway These are entrance points which have a high degree of visibility and a distinct sense of transition. Gateways may include landscaping, public art, gateway structures, special lighting and signs. Entrances These are points of entry to a neighbourhood, tunnel or historic zone. Node/Neighbourhood focal points Nodes are highly visible locations, which serve as meeting places for residents or one or more neighbourhoods and have a clear identity as neighbourhood locations. They can be functional or natural. Shared path These are priority routes for pedestrians and cyclists. A pathway near to the road. Dive structure The retaining structures and feature cladding diving to the entrance to a tunnel entrance or portal. Portal The face and retaining structure immediately above the tunnel entrance, generally located perpendicular to the dive structure. Noise barrier A wall created to mitigate the effects of traffic noise. Landscape shown at full maturity Full maturity refers to landscape at 15 years, which will vary for each vegetation species. NorthConnex Urban Design and Landscape Plan Stage 1B August 2017 i

6 Contents Glossary List of drawings List of figures and tables 1.0 Overview Purpose Background Compliance with Minister s Conditions of Approval Consultation Urban design context Macro analysis Micro analysis Urban and landscape design principles Introduction Urban design objectives Urban design principles Urban design experience Design methodology Interchanges interface Introduction Principles Strategies Driver experience Portals and dive structures Portal concept Principles Strategies Southern portal and dive structure Northern portal and dive structure 4-13 i ii iii 5.0 Tunnel Introduction Principles Strategies Tunnel concept Tunnel narrative objectives Tunnel narrative visual events Tunnel experience Tunnel architecture and cladding Operational ancillary facilities Introduction Principles Strategies Background Family of forms Motorway operations complex organisation strategy 6-4 *6.7 Motorway operations complex western retaining wall and noise barriers Motorway control centre Maintenance grouping Southern ventilation facility Wilson Road tunnel support facility Trelawney Street tunnel support facility Northern ventilation facility Lighting concept Introduction Tunnel concept Portal concept Motorway operations compound lighting concept 7-5 * Please note only chapters in black are included in UDLP Stage 1B. For all other chapters, refer to UDLP Stage One or UDLP Stage Two. ii August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

7 8.0 Landscape design Introduction Landscape context Landscape principles Planting design principles Existing vegetation protection Threatened species strategy Weed management Visual impact Landscape concept plans Landscape strategy - motorway operations compound Landscape strategy - Wilson Road tunnel support facility Landscape strategy - Trelawney Street tunnel support facility Landscape strategy - northern ventilation facility Landscape strategy - rehabilitation landscape Landscape strategy - portals Landscape maintenance plan Sustainability Noise barriers Introduction Principles Strategies Types of noise barriers Retaining walls Retaining walls Retaining walls strategy Retaining wall types Bridges and underpasses Introduction Principles Strategies Miscellaneous items Introduction Shared paths Throwscreens and privacy screens Remote infrastructure and road signage Remote infrastructure Principles Strategies Road signage Residual and rehabilitated sites Materials and colours Principles Drawings and tables Colour concept integration Integration Macro analysis Urban design and landscape objective Urban design principles Landscape design principles Project elements Batter treatments Basins Rehabilitated sites Conclusion 18-1 Appendices 1B A-1 - UDLP Stage 1B Submissions and Responses (August 2017) * Please note only chapters in black are included in UDLP Stage 1B. For all other chapters, refer to UDLP Stage One or UDLP Stage Two. NorthConnex Urban Design and Landscape Plan Stage 1B August 2017 iii

8 List of drawings Drawing No. Description Page No. NCX-CM UD-DG-2001 Motorway operations complex - western boundary retaining wall & noise barrier NorthConnex location plan - southern facility zone 6-15 NCX-CM UD-DG-2002 Motorway operations complex - western boundary retaining wall 6-16 & noise barrier - retaining wall & noise barrier plan - sheet 1 NCX-CM UD-DG-2003 Motorway operations complex - western boundary retaining wall 6-17 & noise barrier - retaining wall & noise barrier plan - sheet 2 NCX-CM UD-DG-2004 Motorway operations complex - western boundary retaining wall 6-18 & noise barrier - elevation 1 NCX-CM UD-DG-2005 Motorway operations complex - western boundary retaining wall 6-19 & noise barrier - elevation 2 NCX-CM UD-DG-2006 Motorway operations complex - western boundary retaining wall 6-20 & noise barrier - part elevation 1 NCX-CM UD-DG-2007 Motorway operations complex - western boundary retaining wall 6-21 & noise barrier - part elevation 2 NCX-CM UD-DG-2008 Motorway operations complex - western boundary retaining wall 6-22 & noise barrier - part elevation 3 NCX-CM UD-DG-2009 Motorway operations complex - western boundary retaining wall 6-23 & noise barrier - part elevation 4 NCX-CM UD-DG-2010 Motorway operations complex - western boundary retaining wall 6-24 & noise barrier - part elevation 5 NCX-CM UD-DG-2012 Motorway operations complex - western boundary retaining wall 6-25 & noise barrier - typical site sections - single tier retaining wall NCX-CM UD-DG-2013 Motorway operations complex - western boundary retaining wall 6-26 & noise barrier - typical site sections - single tier retaining wall NCX-CM UD-DG-2014 Motorway operations complex - western boundary retaining wall & noise barrier - retaining wall and noise barrier detailed 6-27 sections NCX-CM UD-DG-2101 Motorway operations complex western retaining wall and noise barrier - western boundary landscape plan - MOC 6-42 NCX-CM UD-DG-2102 Motorway operations complex western retaining wall and noise barrier - western boundary landscape plan - MOC 6-43 NCX-CM UD-DG-2103 Motorway operations complex western retaining wall and noise barrier - western boundary landscape elevation - MOC 6-44 NCX-CM UD-DG-2104 Motorway operations complex western retaining wall and noise barrier - western boundary landscape elevation - MOC 6-45 NCX-CM UD-DG-2105 Motorway operations complex western retaining wall and noise barrier - western boundary landscape section - MOC 6-46 NCX-CM UD-DG-2106 Motorway operations complex western retaining wall and noise barrier - western boundary landscape section - MOC 6-47 Drawing No. Description Page No. NCX-CM UD-DG-2201 Motorway operations complex western retaining wall and noise barrier - shadow study - 22 March 6-10 NCX-CM UD-DG-2203 Motorway operations complex western retaining wall and noise barrier - shadow study - 21 June 6-11 NCX-CM UD-DG-2204 Motorway operations complex western retaining wall and noise barrier - shadow study - 23 September 6-12 NCX-CM UD-DG-2202 Motorway operations complex western retaining wall and noise barrier - shadow study - 22 December 6-13 NCX-CM UD-DG-2205 Aerial view of proposed motorway operations complex site with 6-6 the western retaining wall and noise barrier in the foreground NCX-CM UD-DG-2206 Photomontage Key Plan 6-28 NCX-CM UD-DG-2207 Photomontage - 2 Eaton Road 6-29 NCX-CM UD-DG-2208 Photomontage - 4 Hillside Place 6-30 NCX-CM UD-DG-2209 Photomontage - 6 Hillside Place 6-31 NCX-CM UD-DG-2210 Photomontage - 8 Hillside Place 6-32 NCX-CM UD-DG-2211 Photomontage - 10 Hillside Place 6-33 NCX-CM UD-DG-2212 Photomontage - 12 Hillside Place 6-34 NCX-CM UD-DG-2213 Photomontage - 12 Gum Grove Place 6-35 NCX-CM UD-DG-2214 Photomontage - 14 Gum Grove Place 6-36 NCX-CM UD-DG-2215 Photomontage - 16 Gum Grove Place 6-37 NCX-CM UD-DG-2216 Photomontage - 18 Gum Grove Place 6-38 NCX-CM UD-DG-2217 Photomontage - 20 Gum Grove Place 6-39 iv August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

9 List of figures and tables Figure No. Description Page No. Figure 1 Aerial image construction works of motorway operations complex looking north 1-10 Figure 2 Aerial image construction works of motorway operations complex looking south 6-8 Figure 3 Gum Grove Place looking north 6-14 Figure 4 Part elevation of MOC western wall 6-40 Figure 5 Brachychiton acerifolius 6-48 Figure 6 Eucalyptus pilularis 6-48 Figure 7 Eucalyptus paniculata 6-48 Figure 8 Flindersia australis 6-48 Figure 9 Lophostemon confertus 6-48 Figure 10 Toona ciliata 6-48 Figure 11 Ceratopetalum gummiferum 6-48 Figure 12 Elaeocarpus reticulatus 6-48 Figure 13 Lomandra longifolia 6-48 Figure 14 Dianella caerulea 6-48 Figure 15 Hardenbergia violacea 6-48 Figure 16 Westringia fruticosa 6-48 Figure 17 Concrete block - split face 6-49 Figure 18 Concrete block - smooth face 6-49 Figure 19 Dulux Endless Dusk 6-49 Figure 20 Dulux Tranquil Retreat 6-49 Figure 21 Chainwire fence 6-49 Figure 22 MOC western retaining wall and noise barrier 6-50 Table No. Description Page No. Table 1-1 Minister s Conditions of Approval (B33) 1-4 Table 1-2 Revised Environmental Mitigation Measures (REMMs) 1-6 Table 1-3 Compliance with Environmental Impact Statement (EIS) objectives 1-8 Table 6-1 Private open space requirements 6-9 Table 6-2 Planting palette 6-48 Table 6-3 MOC western retaining wall and noise barrier materials and finishes 6-49 NorthConnex Urban Design and Landscape Plan Stage 1B August 2017 v

10 1.3 Compliance with Minister s Conditions of Approval MCoA B33 relates to the preparation of Urban Design and Landscape Plan (UDLP) to be implemented prior to completion of detailed design, or as agreed by the Secretary. The specific requirements of MCoA B33 and where they are addressed in this plan are outlined in Table Guideline documents Key guideline documents include: Beyond the Pavement urban design policy procedures and design principles, Roads and Maritime Services, January 2014 Landscape Guideline, Roads and Maritime Services, April 2008, Noise Wall Design Guidelines, Roads and Maritime Services, March 2016 Guideline for Batter Surface Stabilisation Using Vegetation, Roads and Maritime Services, April 2015 Designing to Minimise Vandalism an investigation into planning and design measures to avoid or mitigation vandalism (final draft), RTA, November 2008 NorthConnex Environmental Impact Statement, Roads and Maritime Services, July 2014 NorthConnex Submissions and Preferred Infrastructure Report, Roads and Maritime Services, March Table 1-1: Minister s Conditions of Approval (B33) Minister s Conditions of Approval (B33) Document reference Prior to completion of detailed design, or as otherwise agreed by the Secretary, an Urban Design and Landscape Plan shall be prepared and implemented for the SSI. The Plan shall be prepared by suitably qualified and experienced person(s), NCX-CM UD-PL-0001 (this document) in consultation with the relevant Council and community, for the approval of the Secretary. The Plan shall present an integrated urban and landscape design for the SSI, and shall include, but not necessarily be limited to: (a) identification of design objectives, principles and standards based on: UDLP Stage 1B chapters 1.3.1, and i. Local environmental and heritage values; UDLP Stage 1B chapters and ii. Urban design context; UDLP Stage 1B chapters 1.3.1, 6.7.2, and iii. Sustainable design and maintenance; UDLP Stage 1B chapters and iv. Community safety, amenity and privacy, including safer by design principles where relevant; UDLP Stage 1B chapters and v. Relevant design standards and guidelines; UDLP Stage 1B chapter vi. The urban design objectives outlined in Section of the EIS; UDLP Stage 1B chapter (b) landscaping and building design opportunities to mitigate the visual impacts of *To be included in UDLP Stage Two the operational fixed facilities, including the ventilation facilities, emergency smoke extraction outlets and the Motorway Operations Complex, in accordance with the following design considerations: i. Design and proportions of building facades, fences and landscaping should UDLP Stage 1B chapters and have regard to the surrounding urban context and built form and streetscape character; ii. Opportunities for deep soil zone should be retained to sustain vegetation, UDLP Stage 1B chapter including large trees, iii. Design should have regard to breaking up building massing and articulating UDLP Stage 1B chapters , and buildings and fences; iv. Variations in materials and finishes should be used UDLP Stage 1B chapter v. Retention of a minimum of three (3) hours of direct sunlight in habitable UDLP Stage 1B chapter rooms and in at least 50% of the principal private open space area at residential properties impacted by overshadowing from the SSI between 9am and 3pm on 21 June, or avoidance of unreasonably reduced access to sunlight where existing residential properties currently receive less than this requirement; 1-4 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

11 Minister s Conditions of Approval (B33) (c) the location of existing vegetation and proposed landscaping (including use of endemic and advanced tree species where practicable). Details of species to be replanted and revegetated shall be provided, including their appropriateness to the area and habitat for threatened species. Where feasible and reasonable, cleared vegetation shall be reused; (d) a description of disturbed areas (including compounds) and details of the strategies to progressively rehabilitate, regenerate and/ or revegetate these areas; Document reference UDLP Stage 1B chapter *Refer to UDLP Stage Two (e) design features, built elements, lighting and building materials; UDLP Stage 1B chapter (f) an assessment of the visual screening effects of existing vegetation and the proposed landscaping and built elements. Where receivers are identified as likely to experience high visual impact as a result of the SSI, the Proponent shall in consultation with affected receivers, identify opportunities for providing atreceiver landscaping to further screen views of the SSI. Where agreed to with the landowner, these measures shall be implemented during the construction of the SSI; (g) graphics such as sections, perspective views and sketches for key elements of the SSI, including, but not limited to, built elements of the SSI; (h) monitoring and maintenance procedures for the built elements, rehabilitated vegetation and landscaping (including weed control) including performance indicators, responsibilities, timing and duration and contingencies where rehabilitation of vegetation and landscaping measures fail; and (i) evidence of consultation with the relevant Council and community on the proposed urban design and landscape measures prior to its finalisation. UDLP Stage 1B chapter UDLP Stage 1B chapters UDLP Stage 1B chapter Appendix 1B (to be completed) *Refer to UDLP Stage One (NCX-CM UD-PL-0001) or UDLP Stage Two. NorthConnex Urban Design and Landscape Plan Stage 1B August

12 1.3.2 Urban design and landscape compliance with Revised Environmental Mitigation Measures (REMMs) Chapter 10 of the Submissions and Preferred Infrastructure Report (SPIR) revised summary of mitigation measures, presented a summary of the urban design, landscape character and view assessment carried out to assess the direct and indirect impact of the project. Table 1-2 indicates how these measures are addressed and provides a document reference. Table 1-2: Revised Environmental Mitigation Measures (REMMs) Urban design, landscape character and views (v1) Existing vegetation around the perimeter of construction sites would be retained where feasible and reasonable. (v2) The early implementation of noise barriers and landscape planting around ancillary facilities would be investigated in order to provide visual screening and minimise noise impacts during the construction phase. (v3) Elements within construction sites would be located to minimise visual impacts as far as feasible and reasonable, eg locating equipment back from site boundaries. (v4) The design of acoustic sheds would aim to blend into the background where feasible and reasonable. (v5) Design of site hoardings would consider the use of artwork or project information. (v6) Regular maintenance would be undertaken of site hoardings and perimeter areas including the prompt removal of graffiti. (v7) Revegetation and landscaping would be undertaken progressively. (v8) Cut-off and directed lighting would be used and lighting location considered to ensure glare and light spill are minimised. (v9) Opportunities would be investigated to provide passive irrigation of landscaped areas at the operational ancillary facilities through use of directed overland flow paths. (v10) Opportunities would be investigated to flatten landscape batters at the operational ancillary facilities to maximise plant response and maintainability. (v11) A signage strategy would be developed during detailed design. Potentially affected receivers would be consulted on the final signage in relation to the location and associated impacts. (opv1) Street tree plantings and landscaping would be used to visually soften operational ancillary facilities. (opv2) The urban design and landscaping along the Hills Motorway integration works would be consistent with the recently completed Hills Motorway Upgrade project. (opv3) The visual impact of noise barriers would be reduced through high quality urban design treatments in accordance with Noise Wall Design Guideline (RTA, 2006a). Document reference Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. Related to Construction, not applicable to this UDLP. This is implemented in the design of the retaining wall. Refer to UDLP Stage 1B - chapter *Refer to UDLP Stage One. The noise barriers design is developed to reflect the overall project theme. Refer to UDLP Stage 1B - chapter August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

13 Urban design, landscape character and views (opv4) Landscaped areas would be maintained. (opv5) Cut-off and directed lighting would be used at the interchanges, Hills Motorway integration, motorway operations complex and M1 Pacific Motorway tie-in to minimise glare and light spill to surrounding receivers. Document reference Low maintenance landscape is provided throughout the project. Refer to UDLP Stage 1B - chapter Measures are being implemented to minimise light spill. UDLP Stage 1B - chapter *Refer to UDLP Stage One (NCX-CM UD-PL-0001) or UDLP Stage Two NorthConnex Urban Design and Landscape Plan Stage 1B August

14 1.3.3 Compliance with Environmental Impact Statement (EIS) objectives Section of the EIS outlined the urban and landscape design objectives. Table 1-3 indicates how these objectives are applied in the UDLP and includes a document reference, where relevant. Table 1-3: Compliance with EIS objectives. Objective Provide a safe facility for traffic, pedestrians, cyclists and disabled persons. Provide landmarks at selected places as a contribution to legibility. Maintain existing neighbourhood connectivity and local access for local traffic. Aesthetically enhance the road facility and associated works and structures. Application and UDLP document reference *Refer to UDLP Stage One. Objective Improve existing environmental sustainability wherever possible. Application and UDLP document reference Environmental sustainability is improved by (sustainability measures implemented to be provided in next stage of consultation): *Refer to UDLP Stage One. *Refer to UDLP Stage One. Associated works and structures are enhanced by: Developing a consistent theme to the project, providing branding for the project. Refer to UDLP Stage 1B - chapter Considering the surrounding environment and providing a seamless integration. Refer to UDLP Stage 1B - chapter Providing a landscape design that compliments the existing character of the corridor. Refer to UDLP Stage 1B - chapter Provide patterns and textures as visual relief to reduce bulk and size of the element. Refer to UDLP Stage 1B - chapter Integration of new elements is achieved by: Providing an integrated design for the project elements. Providing a robust and a low maintenance landscape Careful selection of materials, which are durable and requires less maintenance. Refer to UDLP Stage 1B - chapter Landscape design is consistent with the overall project theme and includes: (Refer to UDLP Stage 1B - chapter 6.7.9) Enhance existing landscape and integrate new landscape both across and into the corridor. Integrate new elements with existing work in as seamless a way as possible to meet the urban design requirements. Implementing a consistent theme across the project and also to suit the design to relate to its neighbourhood context. Refer to UDLP Stage 1B - chapter Developing a consistent palette of materials, which are used throughout the project. Refer to UDLP Stage 1B - chapter Integrating new landscape with existing along the corridor Maintaining or enhancing the existing landscape character of the surrounding environment, including neighbourhood settings Providing a rehabilitated landscape Providing feature landscape elements, where relevant Incorporating ESD principles in landscape design. 1-8 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

15 Objective Continue the family of road elements and built forms already established. Enhance driver experience and visual contribution to the built environment. Application and UDLP document reference Continuity of project elements is achieved by: Developing a consistent palette of materials which are used throughout the project. Refer to UDLP Stage 1B - chapter *Refer to UDLP Stage One. *Refer to UDLP Stage One (NCX-CM UD-PL-0001) or UDLP Stage Two NorthConnex Urban Design and Landscape Plan Stage 1B August

16 1-10 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B Figure 1: Aerial image construction works of motorway operations complex looking north.

17 6.7 Motorway operations complex western retaining walls and noise barriers Objectives The key objectives for the design of the MOC western wall are to: Principles The guiding principles in the development of the MOC western retaining wall and noise barrier design are to: Strategies Strategies to ensure the successful application of the guiding principles include: Introduction This report is prepared by CM + (in association with Context Landscape Design) for the Lendlease Bouygues Joint Venture to satisfy the Minister s Condition of Approval (MCoA) B33. It is entitled NorthConnex Urban Design and Landscape Plan Stage 1B and illustrates the urban and landscape design of the Motorway Operations Complex (MOC) western retaining wall and noise barrier (referred to collectively as the MOC western wall ). This report is to be read in conjunction with the Urban and Landscape Design Plan (UDLP) Stage One, which predominantly included the urban design elements and an overall introduction to the urban and landscape design, for the NorthConnex project. The UDLP Stage One has been submitted to Department of Planning and Environment in December Tunnel design, architectural design and landscape, sustainability, design of site compounds and operational ancillary facilities will be included in the subsequent stages of the UDLP. Provide a visual aesthetic that is responsive to its context Reduce the visual impact of the retaining wall structure and noise barrier on the surrounding neighbourhood Provide privacy to adjoining properties from noise, potential light spill and visual intrusion of vehicular and other operations in the MOC Provide privacy to adjoining properties from noise, potential light spill and visual intrusion in the MOC during construction Provide an integrated design of built forms Provide an integrated urban and landscape design Analyse and mitigate the impacts of overshadowing of permanent structures on the private open spaces of adjoining properties. Be simple and unobtrusive Reduce the visual bulk and size of the retaining wall and noise barrier on the neighbouring residents Reduce the footprint of earthwork required for construction of the wall Minimise disturbance of existing flora, particularly, significant tree stands outside the MOC site and adjoining properties Use materials that are responsive to the local context Provide an integrated noise barrier and retaining wall design Reflect the overall project theme Ensure that overshadowing by the height of the MOC western wall of private open space is minimised Maintain the integrity and quality of the environmental values. Ensure applied finishes are appropriate to their context Ensure the cladding system is suitable for the structure Ensure detailing is of a high standard Provide an inclined outward profile from the base to the wall in order to reduce bulk and visual impact on private open space Provide a pattern and texture to reduce the visual bulk and size of the wall and create a light and shadow effect that reflect the project theme Provide recessive colours to integrate with the environment Integrate the landscape design by maximising the landscape buffer space at the base of the wall Ensure the MOC western wall is perceived as one entity by providing a consistent aesthetic to both elements Ensure the profile of the wall follows the varying topography of existing and new landforms. Consultation A targeted consultation with the residences immediately next to the MOC western wall and The Hills Shire Council is to be conducted with feedback provided, in the submission of this report to Department of Planning and Environment. NorthConnex Urban Design and Landscape Plan Stage 1B August

18 Artist s impression only. Design subject to further development, vegetation and project elements shown is indicative only. Site compound landscape, building and tunnel design in next stage of consultation Proposed landscape shown indicatively at 5 years maturity. Western Retaining Wall and Noise Barrier Pennant Hills Road Hills Motorway off ramp to Pennant Hills Road NCX-CM UD-DG-2205 AERIAL VIEW OF PROPOSED MOTORWAY OPERATIONS COMPLEX SITE WITH THE WESTERN RETAINING WALL AND NOISE BARRIER IN THE FOREGROUND 6-6 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

19 6.7.5 Design concept The MOC western wall is located along the western project boundary of the MOC, within a low density residential setting. It comprises one and two storey dwellings with large backyards, some with swimming pools and domestic scale tree lined streetscapes. The Pennant Hills Golf Course is located in close proximity on the eastern side of Pennant Hills Road but cannot be seen by the residents. The MOC western project boundary is also the cadastral boundary of adjacent properties. It comprises a retaining wall at the bottom, with a noise barrier on top. The retaining wall is about 300 metres in length and ranges in height from about 0.75 metres to 6 metres. The noise barrier is 4.8 metres high, providing noise attenuation. It is oriented north-south with the landform sloping gradually towards the south, and has a steep dip at the southern end. It is a key visual element, particularly for the 12 properties on Hillside Place and Gum Grove Place. Noted below are properties which are directly adjacent to the MOC project boundary: 2 Eaton Road 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place 12 Gum Grove Place 14 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place Design of the wall takes into consideration the proximity of the above properties to the wall and the visual impact on them. The design introduces a decorative treatment to the wall, with patterning and texture providing visual relief, is domestic in scale and breaks down the bulk and size of the wall. There are no significant items of heritage value in the vicinity of the MOC western wall. Items of environmental value, such as the Pennant Hills Golf Course are not impacted by the MOC western wall, as it is located outside the visual curtilege of the amenity. Community safety and security of the adjoining residential properties has been considered in the design of the MOC western wall. The properties are secured with a high fence, which is provided along the MOC western boundary and enclosed at both ends to prevent access to the private lands. The transparent nature of the chainlink mesh fence in a recessive colour enables passive monitoring of the enclosed land by the residents, providing for safety and create a sense of openness. The adjoining MOC site is occupied and monitored 24 hours per day and is safe and secure. Key design features include: A design that is developed as a simple, robust and integrated series of elements Use of decorative concrete blocks for the retaining wall, providing a domestic scale and appearance to the wall Use of neutral colours with non-reflective finishes, making the wall recessive in the environment Articulation of the wall through patterns and textures with different colours, creating an interesting façade and backdrop for the residences A horizontal emphasis to the appearance of the retaining wall, with the incorporation of decorative bands in smooth concrete finish Use of split face concrete blocks for the retaining wall that responds to the immediate neighbourhood context The patterns in the retaining wall are extended to the noise barrier, providing an integrated retaining and noise barrier design Profile of the wall elevation follows the landform with stepping incorporated in a consistent rhythm and pattern An incline to the vertical surface away from the neighbourhood to reduce the visual bulk Gradation of colours provided to blend with the ground and sky with darker neutral base colours at the base to lighter base colours at the top Provision of chainwire boundary fencing in a recessive colour to the back of the property to create a sense of openness to their backyards, addressing CPTED issues and safer by design principles Landscape is integrated with the wall by maximising the landscape buffer at the base of the wall Use of a solid material for the noise barrier to provide privacy for adjoining properties and reduce noise, visual intrusion and light spill from the vehicular and other operations inside the MOC Careful selection of materials, which are domestic in scale, incorporate a modular system, are durable, sustainable and require less maintenance Provision of landscape screening in front of the MOC western wall and appropriate use of materials to ensure privacy of the residential properties is maintained. NorthConnex Urban Design and Landscape Plan Stage 1B August

20 6-8 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B Figure 2: Aerial image construction works of motorway operations complex looking south

21 6.7.6 Shadow studies A shadow study analysis has been conducted to assess potential overshadowing impacts of the MOC western retaining wall on the 12 properties noted in Table 6-1. The shadow diagrams are for Eastern Standard Time and are based on industry standards. Landscape is excluded. The following dates are illustrated, with three times for each date: Autumn Equinox (March 22 9am, 12pm, 3pm) Summer Solstice (December 22 9am, 12pm, 3pm) Winter Solstice (June 21 9am, 12pm, 3pm) Spring Equinox (September 23 9am, 12pm, 3pm) Outcomes: The shadow study illustrates that the scale of the wall has no impact on the requirements of the MCoA B33 (b)(v) with regard to the retention of minimum of three hours of direct sunlight in habitable rooms and at least 50 per cent of the principal private open space between 9am and 3pm. Private open space (POS) study The Hills Development Control Plan (DCP) 2012 development controls for private open space (Part B Section a and b) as: (a) Private open space (behind the front building line) is to be 20% of the lot area or 80m 2 whichever is the greater and can be contained within the landscaped area of the site. Table 6-1 shows the area of the principal private space required for each property, which is 20 per cent of the total lot area. Table 6-1: Private open space requirements. No. Address Lot area 20% pos (m²) 1 2 Eaton Place Hillside Place Hillside Place Hillside Place Hillside Place Hillside Place Gum Grove Place Gum Grove Place Gum Grove Place Gum Grove Place Gum Grove Place Gum Grove Place The 20 per cent area for private open space and the rectangular area of 6 metres x 4 metres for each property is illustrated on the shadow diagrams. The shadow study illustrates that the scale of the wall has no impact on the requirements of the MCoA B33 (b)(v) with regard to the retention of at least three hours of sunlight in at least 50 per cent of the principal private open space between 9am and 3pm. (b) The private open space area must be able to contain a rectangle measuring 6 metres by 4 metres. NorthConnex Urban Design and Landscape Plan Stage 1B August

22 2 Eaton Road 2 Eaton Road 2 Eaton Road 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 12 Gum Grove Place 14 Gum Grove Place 12 Gum Grove Place 14 Gum Grove Place 12 Gum Grove Place 14 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place HILLS MOTORWAY HILLS MOTORWAY HILLS MOTORWAY LEGEND Private open space 6m x 4m Space m March 22 9am Cadastral boundary March 22 12pm March 22 3pm Design subject to further development, vegetation and project elements shown is indicative only. Site compound landscape, building and tunnel design in next stage of consultation Proposed landscape shown indicatively at 5 years maturity. NCX-CM UD-DG-2201 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - SHADOW STUDY - 22 MARCH 6-10 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

23 2 Eaton Road 2 Eaton Road 2 Eaton Road 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 12 Gum Grove Place 14 Gum Grove Place 12 Gum Grove Place 14 Gum Grove Place 12 Gum Grove Place 14 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place HILLS MOTORWAY HILLS MOTORWAY HILLS MOTORWAY LEGEND Private open space 6m x 4m Space m Cadastral boundary June 21 June 21 June 21 9am 12pm 3pm Design subject to further development, vegetation and project elements shown is indicative only. Site compound landscape, building and tunnel design in next stage of consultation Proposed landscape shown indicatively at 5 years maturity. NCX-CM UD-DG-2203 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - SHADOW STUDY - 21 JUNE NorthConnex Urban Design and Landscape Plan Stage 1B August

24 2 Eaton Road 2 Eaton Road 2 Eaton Road 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 12 Gum Grove Place 14 Gum Grove Place 12 Gum Grove Place 14 Gum Grove Place 12 Gum Grove Place 14 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place HILLS MOTORWAY HILLS MOTORWAY HILLS MOTORWAY LEGEND Private open space 6m x 4m Space m September 23 September 23 September 23 9am 12pm 3pm Cadastral boundary Design subject to further development, vegetation and project elements shown is indicative only. Site compound landscape, building and tunnel design in next stage of consultation Proposed landscape shown indicatively at 5 years maturity. NCX-CM UD-DG-2204 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - SHADOW STUDY - 23 STEMBER 6-12 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

25 2 Eaton Road 2 Eaton Road 2 Eaton Road 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place PENNANT HILLS RD 12 Gum Grove Place 14 Gum Grove Place 12 Gum Grove Place 14 Gum Grove Place 12 Gum Grove Place 14 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place 22 Gum Grove Place HILLS MOTORWAY HILLS MOTORWAY HILLS MOTORWAY LEGEND Private open space 6m x 4m Space m Cadastral boundary December 22 December 22 December 22 9am 12pm 3pm Design subject to further development, vegetation and project elements shown is indicative only. Site compound landscape, building and tunnel design in next stage of consultation Proposed landscape shown indicatively at 5 years maturity. NCX-CM UD-vMOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - SHADOW STUDY - 22 DECEMBER NorthConnex Urban Design and Landscape Plan Stage 1B August

26 6.7.7 Design drawings and graphics Figure 3: Gum Grove Place looking north August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

27 GMH T M1? T M1 BM BM T BIN? M1 BIN T M1?? T M1 T M1 SLOW SLOW SLOW SLOW SLOW 100 BUS ONLY 70? ONLY BUS? WH SLOW WH SLOW RW RW JB WH WH WH RW RW RW RW RW JB JB TSP??? SLOW TSC M1 T M1 T?P M1 T M1 T M1 T WH WH WH WH WH EATON RD KE CLEAR PROPOSED RETAINING WALL AND NOISE BARRIER SEE DRAWING 2002 PENNANT HILLS GOLF COURSE HILLSIDE PL. RW EATON RD RW RW PENNANT HILLS RD PROPOSED RETAINING WALL AND NOISE BARRIER SEE DRAWING 2003 MOTORWAY OPERATIONS COMPLEX JBJB GUM GROVE PL. CLEAR KE CLEAR KE HILLS MOTOWAY OAKES RD NORTHCONNEX ENTRY RAMP HILLS MOTORWAY M1 T M1 T M1 T ONLY BUS ONLY BUS OAKES RD NORTHCONNEX EXIT RAMP CORAL TREE DR. PENNANT HILLS RD M1 T M1 T M1 T M1 T M1 T M1 T 1 NORTHCONNEX LOCATION PLAN - MOC RETAINING WALL & NOISE BARRIER - UDLP STAGE 1B SCALE 1: 2500 M1 T LEGEND PROJECT BOUNDARY This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2001 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER NORTHCONNEX LOCATION PLAN - SOUTHERN FACILITY ZONE NorthConnex Urban Design and Landscape Plan Stage 1B August

28 DRIVEWAY SLOW MATCH LINE REFER TO DRG. NCX-CM AU-DG-2003 SHARED PATH RW RW RW OVERALL COVERED SERVICE YARD MOTORWAY CONTROL CENTRE TOWED VEHICLE COMPLEX CAR PARK CAR PARK CAR PARK INTERNAL ACCESS RD TOP OF RETAINING WALL PROPOSED PROPERTY BOUNDARY FENCE LOCATED ON CADASTRIAL BOUNDARY NOISE BARRIER DRIVEWAY (MAIN ENTRANCE) 3030 NOMINAL PROJECT/ CADASTRAL BOUNDARY 2683 NOMINAL PROJECT BOUNDARY 2 EATON RD EATON RD WH 8 HILLSIDE PL. 10 HILLSIDE PL. PROJECT BOUNDARY 4 HILLSIDE PL. 6 HILLSIDE PL. 4 EATON RD 12HILLSIDE PL. 2 HILLSIDE PL. EATON RD HILLSIDE PL 1 RETAINING WALL & NOISE BARRIER PLAN - MOTORWAY OPERATIONS COMPLEX SCALE 1:500 LEGEND PROJECT BOUNDARY AAC NOISE BARRIER RETAINING WALL PROPOSED BOUNDARY FENCE EXISTING FENCE This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity m SCALE 1:500@A3 NCX-CM UD-DG-2002 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER RETAINING WALL & NOISE BARRIER PLAN - SHEET August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

29 MATCH LINE REFER TO DRG. NCX-CM AU-DG-2002 PROJECT/ CADASTRAL BOUNDARY RW OVERALL COVERED SERVICE YARD SOUTHERN VENTILATION BUILDING JB 2660 NOMINAL PROPOSED PROPERTY BOUNDARY FENCE LOCATED ON CADASTRIAL BOUNDARY INTERNAL ACCESS RD PROJECT/ CADASTRAL BOUNDARY TOP OF RETAINING WALL NOISE BARRIER 4194 NOMINAL MAINTENANCE ACCESS POINT INTERNAL ACCESS RD 516 NOMINAL STORAGE CYCLE PATH MOC NOISE BARRIER TO TIE INTO NORTHCONNEX ENTRY RAMP NOISE WALL 20 GUM GROVE PL. MOTORWAY CORRIDOR NOISE BARRIER, REFER TO UDLP STAGE 1 18 GUM GROVE PL. 12HILLSIDE PL. 14 GUM GROVE PL. 16 GUM GROVE PL. 22 GUM GROVE PL. 12 GUM GROVE PL. WH GUM GROVE PL. 13 GUM GROVE PL. 13 HILLSIDE PL. 10 GUM GROVE PL. 2 RETAINING WALL & NOISE BARRIER PLAN - MOTORWAY OPERATIONS COMPLEX SCALE 1:500 LEGEND PROJECT BOUNDARY AAC NOISE BARRIER NOISE BARRIER (UDLP STAGE 1) RETAINING WALL m SCALE 1:500@A3 PROPOSED BOUNDARY FENCE EXISTING FENCE This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2003 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER RETAINING WALL & NOISE BARRIER PLAN - SHEET 2 NorthConnex Urban Design and Landscape Plan Stage 1B August

30 / / MATCH LINE REFER TO DRG. NCX-CM AU-DG-2005 MOTORWAY CONTROL CENTRE EATON RD DRIVEWAY MAINTENANCE BUILDING 2 EATON RD 4 HILLSIDE PL. 6 HILLSIDE PL. 8 HILLSIDE PL. 1 RETAINING WALL & NOISE BARRIER - ELEVATION 1 NTS LEGEND DECORATIVE CONCRETE BLOCK RETAINING WALL AAC NOISE BARRIER PROPERTY BOUNDARY This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2004 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER ELEVATION August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

31 / / MATCH LINE REFER TO DRG. NCX-CM AU-DG SOUTHERN VENTILATION BUILDING NORTHCONNEX ENTRY TUNNEL COVERED SERVICE YARD 10 HILLSIDE PL GUM GROVE PL 16 GUM GROVE PL. 18 GUM GROVE PL. 20 GUM GROVE PL. HILLSIDE PL. 22 GUM GROVE PL. 12 GUM GROVE PL. 2 RETAINING WALL & NOISE BARRIER - ELEVATION 2 NTS LEGEND DECORATIVE CONCRETE BLOCK RETAINING WALL AAC NOISE BARRIER PROPERTY BOUNDARY This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2005 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER ELEVATION 2 NorthConnex Urban Design and Landscape Plan Stage 1B August

32 RETAINING WALL MATCH LINE REFER TO DRG. NCX-CM AU-DG NOMINAL OVERALL LENGTH START OF 2 EATON ROAD 4 HILL SIDE PL (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2207) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2208) T.O.W - NOISE BARRIER T.O.W - RETAINING WALL F.G.L - BASE OF RETAINING WALL 1 RETAINING WALL & NOISE BARRIER - PART ELEVATION 1 SCALE 1:200 This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. LEGEND SPLIT FACE BLOCK 1 SMOOTH FACE BLOCK 1 SPLIT FACE CAPPING BLOCK 01 AAC NOISE BARRIER SPLIT FACE BLOCK 2 SMOOT FACE BLOCK 2 AAC NOISE WALL PATTERN M NOISE ATTENUATION LINE m SCALE 1:200@A3 NCX-CM UD-DG-2006 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER PART ELEVATION August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

33 NCX-CM AU-DG-2008 MATCH LINE REFER TO DRG NOMINAL OVERALL LENGTH 4 HILL SIDE PL 6 HILL SIDE PL 8 HILL SIDE PL 10 HILL SIDE PL (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2208) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2209) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2210) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2211) T.O.W - NOISE BARRIER T.O.W - RETAINING WALL F.G.L - BASE OF RETAINING WALL 3869, ,0001 MATCH LINE REFER TO DRG. NCX-CM AU-DG RETAINING WALL & NOISE BARRIER - PART ELEVATION 2 SCALE 1:200 This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. LEGEND SPLIT FACE BLOCK 1 SMOOTH FACE BLOCK 1 SPLIT FACE CAPPING BLOCK 01 AAC NOISE BARRIER SPLIT FACE BLOCK 2 SMOOT FACE BLOCK 2 AAC NOISE WALL PATTERN M NOISE ATTENUATION LINE m SCALE 1:200@A3 NCX-CM UD-DG-2007 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER PART ELEVATION 2 NorthConnex Urban Design and Landscape Plan Stage 1B August

34 MATCH LINE REFER TO DRG. NCX-CM AU-DG NOMINAL OVERALL LENGTH DOUBLE TIER RETAINING WALL 10 HILL SIDE PL 12 HILL SIDE PL 14 GUM GROVE PL (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2211) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2212) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2213) T.O.W - NOISE BARRIER BEND LINE T.O.W - NOISE BARRIER T.O.W - RETAINING WALL T.O.W - RETAINING WALL F.G.L - BASE OF RETAINING WALL F.G.L - BASE OF RETAINING WALL MATCH LINE REFER TO DRG. NCX-CM AU-DG RETAINING WALL & NOISE BARRIER - PART ELEVATION 3 SCALE 1:200 LEGEND This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. SPLIT FACE BLOCK 1 SMOOTH FACE BLOCK 1 SPLIT FACE CAPPING BLOCK 01 AAC NOISE BARRIER SPLIT FACE BLOCK 2 SMOOT FACE BLOCK 2 AAC NOISE WALL PATTERN M NOISE ATTENUATION LINE m SCALE 1:200@A3 NCX-CM UD-DG-2008 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER PART ELEVATION August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

35 MATCH LINE REFER TO DRG. NCX-CM AU-DG-2010 NCX-CM AU-DG NOMINAL OVERALL LENGTH 14 GUM GROVE PL 16 GUM GROVE PL 18 GUM GROVE PL (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2213) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2214) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2215) T.O.W - NOISE BARRIER T.O.W - RETAINING WALL F.G.L - BASE OF RETAINING WALL MATCH LINE REFER TO DRG. 4 RETAINING WALL & NOISE BARRIER - PART ELEVATION 4 SCALE 1:200 This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. LEGEND SPLIT FACE BLOCK 1 SMOOTH FACE BLOCK 1 SPLIT FACE CAPPING BLOCK 01 AAC NOISE BARRIER SPLIT FACE BLOCK 2 SMOOT FACE BLOCK 2 AAC NOISE WALL PATTERN M NOISE ATTENUATION LINE m SCALE 1:200@A3 NCX-CM UD-DG-2009 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER PART ELEVATION 4 NorthConnex Urban Design and Landscape Plan Stage 1B August

36 NCX-CM AU-DG NOMINAL OVERALL LENGTH 18 GUM GROVE PL 20 GUM GROVE PL END OF RETAINING WALL 22 GUM GROVE PL (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2215) (FOR PHOTOMONTAGE REFER TO IMAGE NCX-CM UD-DG-2216) T.O.W - NOISE BARRIER T.O.W - RETAINING WALL F.G.L - BASE NOISE BARRIER F.G.L - BASE RETAINING WALL MATCH LINE REFER TO DRG. 5 RETAINING WALL & NOISE BARRIER - PART ELEVATION 5 SCALE 1:200 This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. LEGEND SPLIT FACE BLOCK 1 SMOOTH FACE BLOCK 1 SPLIT FACE CAPPING BLOCK 01 AAC NOISE BARRIER SPLIT FACE BLOCK 2 SMOOT FACE BLOCK 2 AAC NOISE WALL PATTERN M NOISE ATTENUATION LINE m SCALE 1:200@A3 NCX-CM UD-DG-2010 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER PART ELEVATION August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

37 This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NorthConnex Urban Design and Landscape Plan Stage 1B August

38 6-26 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity.

39 4210 NOMINAL OFFSET NOISE BARRIER WHERE WALL HEIGHT IS UP TO NOMINAL OFFSET TO BASE OF WALL WHERE WALL HEIGHT UP TO NOM 4960 NOMINAL OFFSET NOISE BARRIER WHERE WALL HEIGHT IS BETWEEN 2400 TO 6050 CADASTRIAL BOUNDARY NOMINAL NOISE BARRIER ACOUSTIC HEIGHT CADASTRIAL BOUNDARY 3340 NOMINAL OFFSET TO BASE OF WALL WHERE WALL HEIGHT IS BETWEEN 2400 TO NOM NOMINAL NOISE BARRIER ACOUSTIC HEIGHT MAX NOMINAL HEIGHT VARIES FIRST TIER 2400 FENCE MAX. NOMINAL HEIGHT VARIES 1 TYPICAL SECTION - SINGLE TIER RETAINING WALL SCALE 1: 75 NOTE: LANDSCAPING OMITTED FOR CLARITY REFER TO LANDSCAPE CHAPTER OF URBAN DESIGN & LANDSCAPE PLAN STAGE 1B DOCUMENT 2400 FENCE 2 TYPICAL SECTION - SINGLE TIER RETAINING WALL SCALE 1: 75 NOTE: LANDSCAPING OMITTED FOR CLARITY REFER TO LANDSCAPE CHAPTER OF URBAN DESIGN & LANDSCAPE PLAN STAGE 1B DOCUMENT LEGEND 01 DECORATIVE CONCRETE BLOCK RETAINING WALL 02 AAC NOISE BARRIER 03 PROPOSED BOUNDARY FENCE - CHAIN LINK MESH 04 LANDSCAPED ZONE - REFER TO LANDSCAPE DESIGN CHAPTER 05 CAPPING STONE 06 PAVEMENT 07 COMPLEX LIGHTING 08 PERFORMANCE BARRIER This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity mm SCALE 1:75A3 NCX-CM UD-DG-2014 MOTORWAY OPERATIONS COMPLEX - WESTERN BOUNDARY RETAINING WALL & NOISE BARRIER RETAINING WALL AND NOISE BARRIER DETAILED SECTIONS NorthConnex Urban Design and Landscape Plan Stage 1B August

40 6.7.8 Photomontages The following pages contain the photomontages for the 11 properties noted below. They have been generated by undertaking site visits on each of the properties and selecting a photograph that best illustrates the proposed wall from the individual property. 2 Eaton Road 4 Hillside Place 6 Hillside Place 8 Hillside Place 10 Hillside Place 12 Hillside Place 12 Gum Grove Place 14 Gum Grove Place 16 Gum Grove Place 18 Gum Grove Place 20 Gum Grove Place No photomontage is provided for 22 Gum Grove Place as this property will remain vacant throughout construction, having been purchased by the Roads and Maritime Services (RMS). Please note pages 6-29 to 6-39 have been redacted due to privacy issues. LEGEND Viewpoint Cadastral boundary NCX-CM UD-DG-2206 PHOTOMONTAGE KEY PLAN 6-28 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

41 6-40 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B Figure 4: Part elevation of MOC western wall

42 6.7.9 Landscape Due to the proximity to residences, a landscape buffer comprised of massed tree and shrub planting is incorporated between the retaining wall and the property boundary. The key considerations are: Narrowness of the planting area (about 2.8 metres) Westerly orientation Maintenance access and access during installation Proximity to neighbouring properties Screening to reduce the bulk, scale and visual impact of the retaining wall (including the buildings behind) The root system of the selected plant species will have minimal impact on the neighbouring properties and the wall. A clearance for tree planting from the base of the retaining wall has been considered. For this purpose, a selection of trees and shrubs are required that can provide both the height and screening effect, while fitting the available space and having minimal impact upon neighbours. Native evergreen and deciduous species have also been selected to provide habitat. Trees chosen include: Fast growing eucalypts (including Turpentine) for height -- Eucalyptus paniculata Grey Ironbark -- Eucalyptus pilularis Blackbutt -- Syncarpia glomulifera Turpentine Tall native rainforest trees for their height, density of canopy and because they are deciduous -- Brachychiton acerifolius Illawarra Flame Tree -- Flindersia australis Crows Ash -- Lophostemon confertus Brush Box -- Toona ciliata Red Cedar Medium height dense native rainforest species and other natives for their screening capability: -- Acmena smithii Lilly Pilly -- Callistemon viminalis Red Bottlebrush -- Ceratopetalum gummiferum NSW Christmas Bush -- Elaeocarpus reticulatus Blueberry Ash -- Pittosporum revolutum Yellow Pittosporum -- Podocarpus elatus Plum Pine -- Syzygium leuhmannii Small-leaved Lilly Pilly -- Syzygium paniculatum Magenta Lilly Pilly Only occasional access for landscape maintenance will be required. This is provided by low tussock planting which allows foot traffic and will also serve to suppress weeds. Species for this purpose include: -- Dianella caerulea Flax-Lily -- Hardenbergia violacea Purple Coral Pea -- Themeda triandra Kangaroo Grass -- Westringia fruticosa Native Rosemary Planting is installed at a variety of container sizes from 75 litre, which can be expected to be a minimum 2.5 metres tall at planting, to 25 litre which can be expected to be a minimum of 1.5 metres tall at planting. Plants must be carried and planted by hand so larger sizes are not used. All species are hardy and low maintenance. The landscape area will be mulched with 100 millimetres woodchip mulch to suppress weeds and retain moisture, and a subsurface irrigation system will be installed to ensure growth throughout the year. The area to be planted comprises a deep soil zone which will assist in the viability and growth of the plantings Visual Screening Where residences experience a high visual impact of the project and where it is identified that the proposed landscaping does not satisfy the visual screening requirements of adjacent residences, at-receptor landscaping will be considered in consultation with the relevant landowner and will be implemented during construction. At-receptor landscaping can be more effective at screening because it is closer to the viewer and can therefore screen a larger area sooner. Typically at-receptor landscaping will include planting of dense bushy native trees at a spacing that suits the ultimate size of the species and taking into consideration existing garden planting. Container size at planting will be litres with a minimum height of between 2-3 metres. The site for at-receptor landscaping should have a minimum planting width of 1.5 metres. Landscape establishment maintenance plan Landscape Establishment Maintenance will be undertaken from the Date of Construction Completion and is for a period of 12 months for Local areas and 24 months within the NorthConnex Motorway area, with ongoing landscape maintenance by the Operator or Roads and Maritime/Council. Successful survival of planting will be measured as 80 per cent of plants within a 100m 2 grid measured at 12 months and 24 months. The landscape planting design does not propose large areas of single-species so as to minimise vegetation failure. In the unlikely event broad scale failure of new landscape plantings, investigations will be undertaken to ascertain the causes and remedial measures and new planting implemented. Any failure of planting is measured and assessed at 24 months to determine compliance with Condition B33(h). A maintenance team of qualified landscape contractors will undertake the maintenance for the contract period as required by the Contract. A detailed Landscape Establishment Maintenance Plan (LEMP) will define the goals and objectives of the landscape maintenance, identify specific problems and issues, outline appropriate corrective measures and identify a program of works to complete ongoing maintenance. The following works will be undertaken as a minimum during the construction and plant establishment period All new planting would receive watering to ensure that a level of moisture is maintained and that plants are not permitted to dry out. This would be dependent upon natural rainfall levels; Mulch would be maintained in a weed free condition and topped up as required All planting areas would be kept free of grass and weed. Grass and weed removal would be carried out at intervals of not more than four weeks. Weeds that cannot be controlled by a glyphosate based herbicide would be removed by hand and removed from the site area Tree guards would be maintained around each plant so that the natural plant growth is not impeded or restricted. Damaged and missing tree guards would be replaced Rubbish would be removed and the site kept neat and tidy Stakes and tree guards would be removed at the end of the plant establishment period Failed, damaged or stolen plants in significant locations would be replaced Maintain healthy weed-free growth. NorthConnex Urban Design and Landscape Plan Stage 1B August

43 MOTORWAY CONTROL CENTRE MAINTENANCE BUILDING 0 25m 50m This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2101 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - WESTERN BOUNDARY LANDSCAPE PLAN - MOC 1:500@A August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

44 COVERED SERVICE YARD SOUTHERN VENTILATION BUILDING 0 25m 50m This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2102 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - WESTERN BOUNDARY LANDSCAPE PLAN - MOC 1:500@A3 NorthConnex Urban Design and Landscape Plan Stage 1B August

45 BARRIER 0 25m 50m 1:500@A3 This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2103 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - WESTERN BOUNDARY LANDSCAPE ELEVATION - MOC 6-44 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

46 BARRIER SCREEN PLANTING 0 25m 50m 1:500@A3 This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2104 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - WESTERN BOUNDARY LANDSCAPE ELEVATION - MOC NorthConnex Urban Design and Landscape Plan Stage 1B August

47 This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. 0 5m 10m 1:100@A3 NCX-CM UD-DG-2105 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - WESTERN BOUNDARY LANDSCAPE SECTION - MOC 6-46 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

48 0 5m 10m This design is subject to further development. Vegetation and project elements shown are indicative only. The site compound landscape, building and tunnel design will be included in the next stage of consultation. The proposed landscape shown is at full maturity. NCX-CM UD-DG-2106 MOTORWAY OPERATIONS COMPLEX WESTERN RETAINING WALL AND NOISE BARRIER - WESTERN BOUNDARY LANDSCAPE SECTION - MOC NorthConnex Urban Design and Landscape Plan Stage 1B August

49 Table 6-2: Planting palette Botanical Name Common Name INFORMAL NATIVE TREE PLANTING Brachychiton acerifolius Illawarra Flame Tree Eucalyptus paniculata Grey Ironbark Eucalyptus pilularis Blackbutt Flindersia australis Crows Ash Lophostemon confertus Syncarpia glomulifera Brush Box Turpentine Figure 5: Brachychiton acerifolius Figure 6: Eucalyptus pilularis Figure 7: Eucalyptus paniculata Figure 8: Flindersia australis Syzygium paniculatum Magenta Lilly Pilly Toona ciliata Red Cedar NATIVE SHRUBS, GRASSES AND GROUNDCOVERS Acmena smithii Lilly Pilly Callistemon viminalis Red Bottlebrush Ceratopetalum gummiferum NSW Christmas Bush Elaeocarpus reticulatus Blueberry Ash Pittosporum revolutum Podocarpus elatus Yellow Pittosporum Plum Pine Figure 9: Lophostemon confertus Figure 10: Toona ciliata Figure 11: Ceratopetalum gummiferum Figure 12 Elaeocarpus reticulatus Syzygium leuhmannii Small-leaved Lilly Pilly Dianella caerulea Flax-Lily Lomandra longifolia Mat-rush Hardenbergia violacea Purple Coral Pea Themeda triandra Kangaroo Grass Westringia fruticosa Native Rosemary Figure 13: Syncarpia glomulifera Figure 14: Dianella caerulea Figure 15: Hardenbergia violacea Figure 16: Westringia fruticosa 6-48 August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

50 Materials and finishes The materials and finishes are selected to respond to their context and help to reduce the visual impact of the MOC western retaining wall on the adjacent properties. They have been assessed on three main criteria appearance, durability and maintainability. The following materials and finishes are proposed for the elements of the MOC western wall: Retaining wall Spilt face and smooth face concrete blocks in different neutral colours Noise barrier Hebel AAC panels in different colours with a neutral base Fence Standard chainwire fence (Type 1), coloured in black Table 6-3: MOC western retaining wall and noise barrier material and finishes MOC western retaining wall and noise barrier Element and type Material: Class/AS Finish: Class/AS Notes Retaining wall Concrete block AS4678: 2002 Split face and smooth face (Two colours x two finishes = four surfaces) Noise barrier/feature walls Austral masonary Charcoal, Charcoal 50% or equivalent Hebel AAC panel/support post Exterior acrylic paint AS Dulux PG1F3 Endless Dusk Dulux PG1F1 Tranquil Retreat. Fence Chainwire mesh fence with post Black Retaining wall A table of materials is provided for the provision of known Australian Standards for materials and finishes selected. Figure 17: Concrete block - split face Figure 18: Concrete block - smooth face Noise barrier Figure 19: Dulux Endless Dusk. Fence Figure 20: Dulux Tranquil Retreat. Figure 21: Chainwire fence. NorthConnex Urban Design and Landscape Plan Stage 1B August

51 Conclusion The design of the MOC western wall is built on an integrated approach to urban design, engineering and functional requirements. It acknowledges the sensitivity of its location and the impact it would have on the adjacent properties, due to its visual prominence. The design outcome ensures that appropriate measures have been incorporated to mitigate the visual impact of the walls on adjoining residents, reduce noise and visual intrusion of vehicular and other operations in the MOC, reduce potential light spill from the MOC on nearby properties and reduce the impact of overshadowing. Figure 22: MOC western retaining wall and noise barrier August 2017 NorthConnex Urban Design and Landscape Plan Stage 1B

52 Appendix 1B UDLP Stage 1B - Submissions and Responses (August 2017) NorthConnex Urban Design and Landscape Plan Stage 1B August 2017 A-1

53 UDLP Stage 1b - Appendix 1 Submissions and Responses Executive Summary The NorthConnex Urban Design and Landscape Plan (UDLP) has been prepared in accordance with Condition of Approval B33. The UDLP is a logical development of the objectives and principles outlined in the initial UDLP included in the NorthConnex Environmental Impact Statement. The UDLP Stage 1 was exhibited for community feedback in November 2016 and approved by the Department of Planning and Environment in May Community consultation on UDLP Stage 1B was carried out in April and May The UDLP Stage 2, which includes architectural design of the operational compounds and buildings, will be exhibited in September Urban Design and Landscape Plan Stage 1b The UDLP Stage 1b encompasses the NorthConnex urban design principles and objectives, urban design experience, and design methodology for the motorway operations complex western retaining walls and noise barriers as part of the operational ancillary facilities. Other elements to be included in future UDLP stages will include operational compounds and buildings, tunnel interiors (principles, strategies, architecture, narrative concept and visual events) and landscape design. Direct consultation process Consultation on Stage 1B was open from Thursday 20 April to Friday 5 May Late submissions were accepted up to Wednesday 7 June, Residents and property owners were encouraged to provide their feedback via (enquiries@northconnex.com.au), phone ( ) or in person (NorthConnex Community Information Centre, 118 Yarrara Road, Pennant Hills). The UDLP for the retaining walls and noise barriers was provided to The Hills Shire Council for comment. Targeted consultation was carried out with individual residents and property owners immediately adjacent to the motorway operations complex retaining walls and noise barriers. One property owned by Roads and Maritime Services was consulted, but declined to comment. As part of the targeted consultation, meetings were held with residents and they were provided with: artist s impression of their property boundary, retaining wall and noise barrier shadow study and diagrams retaining wall, noise barrier and motorway operations complex landscape elevation typical cross section of properties, retaining wall, noise barrier and motorway operations complex southern interchange factsheet. Residents were provided or dictated a feedback form with information on: distance between the retaining wall and their property height of the retaining wall and noise barrier at their property proposed colour of the retaining wall and noise barrier at their property vegetation to be planted between the retaining wall and their property retaining wall and noise barrier construction material timing of retaining wall and noise barrier construction. Residents who submitted feedback were provided with an acknowledgement of receipt and their submission number for future reference. Additional information was provided upon request. Stakeholders will continue to be responded to on matters involving current construction. Clarifications during the consultation period Residents and property owners requested further clarification on a number of aspects of the project, as well as the motorway operations complex western retaining walls and noise barriers. These clarifications were in relation to details of adjacent facilities and structures, proposed vegetation types and sizes, operational noise modelling, landscaping maintenance, drainage, land ownership and property acquisition. Some requests for further detail on adjacent facilities and maintenance were referred to UDLP Stage 2, to be exhibited from early September Submissions received A total of 20 submissions were received from 10 residents and The Hills Shire Council. Submissions were received as , SMS or in person via scheduled meeting. Method received Number of submissions Scheduled meeting SMS 1 Common issues raised in submissions There were a number of common issues raised in the submissions. A breakdown is provided in the following table. Issue Number of UDLP related comments Request for information 24 Yes Landscaping and maintenance 15 Yes Fencing 6 Yes Noise/retaining wall 5 Yes height/alignment/design/location Noise/retaining wall colour/finish 4 Yes Noise/retaining wall benefit 2 Yes Shadowing 2 Yes Visual amenity 1 Yes Drainage 1 Yes Current construction 1 No Declined to comment 2 No Summary of responses to submissions The responses to the received submissions can be summarised as follows: Non-UDLP related issues One comment relating to current construction has been referred to the project team for response. Two property owners declined to provide comment. Legend : = Yes = No Noted = Comment not required to be implemented NorthConnex Urban Design and Landscape Plan Stage 1B Submissions & Responses - August 2017 A1-1

54 UDLP Stage 1b - Appendix 1 Submissions and Responses UDLP related issues Requests for information Requests for information were responded to within the consultation period if possible, with the remainder provided with responses in this report. Landscaping and maintenance This was the most common category of feedback, with many submissions expressing preferences on type, maturity and height of plants to reduce visual impacts. Some submissions suggested nondeciduous vegetation for reduced maintenance, and one suggested deciduous vegetation to minimise shadowing. Maintenance of the landscaped area was raised. Three residents were concerned with the spread of noxious weeds. Some residents requested additional planting as well as particular species. A green wall was suggested by the Hills Shire Council. Fencing Four residents requested fencing other than the recommended chainwire fencing including brick or Colorbond. It is agreed that Colorbond fencing will be provided for these properties, or existing fencing retained, with brick fencing beyond the requirements of the Dividing Fences Act. The chainwire fence would be installed on the motorway operations complex land. The chainwire fence would be visible above the Colorbond fence from the neighbourhood side. Noise/retaining wall height/alignment/design/location One resident requested to reduce the height of the noise/retaining walls and instead install noise walls on Pennants Hills Road, and to consider noise levels in the wall design. This resident commented on the accuracy of modelled operational noise. Based on project noise modelling, design of the noise walls has been modified to be located on the western boundary of the motorway operations complex at an optimum height to mitigate operational noise and light impacts to properties. Another resident expressed concern with the narrowing of the area between the wall and the property boundary. Noise/retaining wall colour and finishes Suggestions for colours and finishes were that the walls be blue, have no bright colours, be neutral in colour, avoid the use of raw concrete for noise walls and provide a matt finish to avoid reflections. It is considered that the proposed colours and finishes satisfy the residents preferences, with the exception of the preference for blue. Noise/retaining wall benefit It was noted by two residents that the proposed design would reduce noise and privacy benefits while another resident noted that no problems were anticipated. Shadowing Two residents were concerned by overshadowing and solar access. Visual amenity The Hills Shire Council noted that the retaining wall and noise barrier was likely to have considerable visual impacts on affected residents. The visual impact is considered to be softened by design elements including patterning, texture and vegetation. Drainage One resident commented that existing drainage problems need to be managed and another requested more information on drainage. An explanation of the planned drainage design has been provided. Changes in response to submissions In response to community feedback, the following changes have been made to the project: Consideration of use of larger plants, where possible Provision of Colorbond boundary fencing in preference to chainwire where requested Provision of additional or relocated solar panels to maximise solar access for impacted property Landscaping detailed design to maximise solar access for impacted properties Modification of noise wall alignment to provide an offset in excess of one metre from the property boundary. Map of properties consulted NorthConnex Urban Design and Landscape Plan Stage 1b Submissions & Responses August 2017 A1-2

55 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number Submission type The Hills Shire Council UDLP1B-11 Council Eaton Road UDLP1b-05 2 Eaton Road 5/5/17 Meeting 24/4/17 Issue Submission Project team response Incorporated in design Visual amenity Landscaping Landscaping Landscaping It is noted that the UDLP proposes the construction of a retaining wall with a noise barrier constructed on top. This is likely to have considerable visual amenity impacts on the affected residents. The tree species selected are considered to provide some level of screening from the noise barrier. However, the proposed maximum planting size of 75 litre (which is expected to be approximately 2.5 metres tall) is likely to take some time for the proposed noise barrier to be sufficiently screened. The UDLP suggests that, as plants must be carried and planted by hand due to site constraints, larger plant sizes are not feasible. It is proposed that alternative options be explored, such as lowering larger plants into the site from the adjoining Motorway Operations Complex. Alternatively, more progressive options can be explored such as the construction of a green wall. This option is often used to provide softening and visual relief for contentious developments such as car parks. The UDLP states that Landscape Establishment Maintenance Plan will come in to effect from the Date of Construction Completion for a period of 12 months for local areas and 24 months within the NorthConnex Motorway area. This is considered a reasonable timeframe to implement the landscape plan. Visual impacts are softened by discrete patterning of colour and texture of the retaining wall face blocks, in addition to use of low level plantings and canopy trees. Council s response accepting the plant species nominated is noted. Consideration will be given to the use of larger pot sizes, noting that the overall time frame of growth required for plants to grow to a height to screen the combined retaining wall and noise wall is likely to be faster, or at least the same, with a smaller pot size. There is an additional benefit of better root development of the maturing plant using smaller pot sizes. Refer comment above regarding the efficacy of using larger plants. The installation of a green wall would require an additional structure in front of the structural retaining wall. As space for a green wall is limited and maintenance required for this height of wall would be intensive, a green wall would potentially cause potential privacy issues for the adjoining properties. Council s acceptance of a 24 month long Landscape Maintenance Plan, which includes establishment maintenance, is noted. The maintenance during the motorway lease term will be the responsibility of the motorway operator. Landscaping Need mature planting Planting will consist of a mix of screening shrubs and canopy trees, initially planted with various size pots. Semi-mature planting pot sizes are defined as 75 to 100 litres, and planting pots of this size is dependent on physical access limitations and isn t possible at all locations. Noted Hillside Place UDLP1b-08 4 Hillside Place Meeting 27/4/17 Request for information Landscaping Need more info on layout of permanent facilities, size, heights, locations, car parks, roads, colours so residents can understand impacts. Also specific information on glass and brick wall at Motorway Control Centre No gumtrees or trees that drop leaves. Neat vegetation, not messy plants Consideration will be given to the use of larger pot sizes, noting that the overall time frame of growth required for plants to grow to a height to screen the combined retaining wall and noise wall is likely to be faster, or at least the same, with a smaller pot size. Draft plans on the motorway operations complex buildings and compound layout provided for consideration. Property owner advised more detailed information on facilities will be available in UDLP Stage 2 to be exhibited in September Recommended plant species include trees other than gum trees (eucalypts). These are non-deciduous trees that drop leaves throughout the whole year. Deciduous species that drop all leaves in a few weeks during autumn, are not recommended as they are not native to the area. Landscaping Prefer hedge-type planting that can be shaped. It is not proposed to provide shaped hedge plants as they require intensive maintenance but rather provide specific dense planting forming a hedge-like screen, as well as tall canopy trees. Request for information Please provide information on expected noise and disturbance levels of operational facilities. Will I hear operational noise from trucks? Noise levels at this property are modeled to be 1dB less in 2029 than if the NorthConnex project was not built. Therefore, noise levels of the operational facilities and tunnels are not expected to be more than existing noise levels. Refer to the NorthConnex Operational Noise Management Report at Noted Noted NorthConnex Urban Design and Landscape Plan Stage 1B Submissions & Responses - August 2017 A1-3

56 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number Submission type 28/4/17 Meeting 27/4/17 Issue Submission Project team response Incorporated in design Request for information Fencing Request for information Fencing Noise/retaining wall colour Landscaping Information on depth of dive adjacent to my property I talked with my husband yesterday night. He doesn't like the chain link fence which will replace our old fence. It make us feel like we will live in the prison. I have the same feeling. We strongly prefer it can be replaced with a solid brick wall. Another concern is the plant area where behind the retaining wall is our private place or not? That land belongs to us or to the public? Prefer colourbond fencing on the boundary line (similar to what is there now) rather than wire mesh fencing as it will shield any maintenance shortcomings. Prefer the retaining and noise walls to be blue in colour. Prefer slow growing, non-deciduous plants of about 5-6 metres high that won't cause maintenance issues on my property but will screen the noise wall. The northbound on ramp from Pennant Hills Road varies in depth from approximately 4 to 5.4 metres across the length equivalent to this property s boundary. The dive is approximately 30 metres away from the boundary at its closest point. The level of the roadway is about the same level as the rear yard of this property. Chainwire boundary fencing in a recessive colour is recommended for the back wall of the property to create a sense of openness to the backyards of the respective properties, however in accordance with the property owner s preference, it is proposed that a new Colorbond fence be installed on the boundary. The chainwire fence would be installed on the motorway operations complex land. The chainwire fence would be visible above the Colorbond fence from the neighbourhood side. A brick wall is not proposed as it is beyond the requirements of the Dividing Fences Act. The planted area between the retaining wall and the property boundary is Roads and Maritime Services land, leased to the motorway operator. The land will be secure and not accessible by the public. See response provided above in relation to fencing. Neutral colours with non-reflective finishes are recommended to make the wall recessive in the environment. Articulation of the wall through patterns and textures with different colours would also create an interesting façade and backdrop to the neighbourhood. As no other stakeholders expressed a preference for a change from the proposed colour, and a consistent colour scheme is essential for minimising visual impacts, the proposed colours will be retained. Selected plant species include a mix of fast and slow growing non deciduous plants to provide both screening shrubs and canopy trees to screen the noise wall. Maintenance of the planted area between the retaining wall and property boundary will be the responsibility of the motorway operator. Noted Noted Hillside Place 6 Hillside Place UDLP1b-01 8 Hillside Place Phone 20/4/17 Meeting 20/4/17 Request for information Declined to comment Current construction Noise/retaining wall colour The Landscape Maintenance Plan specifies monthly maintenance in the initial stages (12 months for local areas and 24 months for the motorway area) by the contractor to ensure the establishment of landscaping. This includes plant replacement, hand watering and weeding. Maintenance thereafter is the responsibility of the motorway operator. More information is provided in UDLP Stage 2 to be exhibited in September Would like further information on the proposed planting. List of proposed plant species provided for consideration. Noted Current lack of privacy from the changerooms/buildings in southern worksite. Can t use back yard. No bright colours [for retaining wall and noise wall] Referred to project construction team for consideration. The project team proposes to use neutral colours with non-reflective finishes, including a gradation of colours to blend with the ground and sky with darker neutral base colours at the base to lighter base colours, to help make the wall recessive in the environment. Both smooth face and split face blocks are used to further soften visual impacts. Noise/retaining A benefit for construction [for retaining wall and noise wall] to retain privacy Acknowledgement of benefit of retaining wall and noise wall to provide privacy Noted Noted Noted NorthConnex Urban Design and Landscape Plan Stage 1b Submissions & Responses August 2017 A1-4

57 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number UDLP1b Hillside Place Submission type 1/5/17 Meeting 24/4/17 Issue Submission Project team response Incorporated in design wall benefit and shield property from operational noise of the motorway operations complex is noted. Landscaping Very concerned with eradication of bamboo and other noxious weeds The Landscape Maintenance Plan (LMP) will target removal of invasive and exotic plants from the motorway operations complex land. More information on the LMP is provided in UDLP Stage 2 to be exhibited in August Request for information Request for information Request for information Request for information Fencing Current control measures for weeds within the project footprint are detailed in the Construction Environmental Management Plan, Flora and Fauna Management Sub Plan at More information on drainage as existing drainage issues. Previous uncontrolled drainage issues caused by overland flow are noted. Compound site drainage will be controlled with a whole of site piped drainage Noted system, including tilting the internal road away from the western retaining wall. The internal road and noise wall are designed to minimise any 1:100 year overland flow to the adjoining properties, with the flow path directed to the south and through the Hills Motorway corridor land. Information on plant species and height at maturity. List of proposed plant species provided for consideration. Noted Who will maintain space between property and retaining wall? Current issues with noxious weed encroachment and [previously] could contact RMS for maintenance. Height of buildings and sightlines from house and especially from upper level of house. After discussions with your staff relating to retaining walls, planting of shrubs and the erection of chain wire fencing at the rear of our property, and while it is appreciated re the use of colourful shrubs etc. we wish to strongly object to the suggestion of removal of our colour bond fence to be replaced with a chain wire fence. The planted area between the retaining wall and the property boundary is Roads and Maritime Services land, leased to the motorway operator, who will be responsible for the landscape maintenance. The land will not be accessible to the public. Cross section of property in relation to permanent motorway facilities and map of tunnel alignment provided for consideration. Chainwire boundary fencing in a recessive colour is recommended for the back wall of the property to create a sense of openness to the backyards of the respective properties, however in accordance with the property owner s preference, it is proposed that a new Colorbond fence be installed on the boundary. The chainwire fence would be installed on the motorway operations complex land. The chainwire fence would be visible above the Colorbond fence from the neighbourhood side. Landscaping Would prefer not to have mature trees and not grown higher than the wall Planting will consist of a mix of screening shrubs and canopy trees, initially planted with pots of various sizes. Semi-mature planting pot sizes are defined as 75 to 100 litres, Noted Noted SMS 24/4/17 Shadowing A few issues with the wall, pool being one and the fact that bedroom window only 1.5 metres from boundary fence, rear of house 1.1 metres from boundary fence. And my solar, going to lose hours a day with wall at that height. The detail planting design for the land in front of the noise wall will be specifically designed to maximise the solar access for this property. The house is cut in below the adjacent land along the boundary which increases existing and potential overshadowing. NorthConnex Urban Design and Landscape Plan Stage 1B Submissions & Responses - August 2017 A1-5

58 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number Submission type Issue Submission Project team response Incorporated in design 10 Hillside Place LPI SixMaps (Nearmap base) aerial photo 11 Jan 2014 (prior to construction) North is the top of the page, and the time of day of the photo appears to be at about 9:30am 10:30AM EDST. The east wall is overshadowed by the existing fence and later in the day by the tree in 8 Hillside (this may have since been removed). 10 Hillside Place shadowing preconstruction Shadow from east boundary fence has disappeared from the PV panels by 10am. The shadow assessment does not include trees existing to prior construction. 10 Hillside Place shadowing post construction The physical overshadowing of the window in mid-june is increased by the combined height of the noise wall and retaining wall. MCoA 33 (b)(v) requires the retention of a minimum of three hours of direct sunlight to habitable rooms between 9am and 3pm. As shown in the study above, the habitable rooms receive sunlight from about 11:30am onwards; which complies with this requirement.. The property owner s preference for timber paling or Colorbond fence to retain privacy (instead of chainwire fence on the property boundary as proposed)may result in a reduction in direct light to the habitable rooms beyond that shown in the above assessment. NorthConnex Urban Design and Landscape Plan Stage 1b Submissions & Responses August 2017 A1-6

59 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number UDLP1b Hillside Place Submission type Meeting 5/6/17 Meeting 3/5/17 Fencing Issue Submission Project team response Incorporated in design Shadowing Noise/retainin g wall height and location Would like to retain existing timber paling fence boundary fence (newer section on northern half of property) or replace it with a colourbond fence to protect privacy. Bedroom window is within a couple of metres of rear boundary and do not want to be disturbed by maintenance workers on RMS land. Would prefer additional solar panels on roof, including any necessary upgrade of power lines to house. Floor height of building behind my property (covered service yard) has increased by about 2 metres which has increased the height of the retaining wall. Would like height reduced to previous (EIS) proposal, as long as noise still reduced as per noise modeling report. Are noise walls still planned on Pennant Hills Road adjacent to covered service yard? Chainwire boundary fencing in a recessive colour is recommended for the back wall of the property to create a sense of openness to the backyards of the respective properties, however in accordance with the property owner s preference, it is proposed that a new Colorbond fence be installed on the boundary. The chainwire fence would be installed on the motorway operations complex land. The chainwire fence would be visible above the Colorbond fence from the neighbourhood side. Provision of additional solar panel or relocated panels is proposed to offset any impact of overshadowing. The NorthConnex Submissions and Preferred Infrastructure Report (Volume 4) details the changes made to the heights of the ventilation outlets. The southern ventilation outlet has been increased in height by 5 metres. This has resulted in design changes to the substation and ventilation building, which subsequently has raised the floor levels of those buildings and the adjacent covered service yard. Additionally, the ground surface of the motorway operations complex has been further designed to ensure that: flooding of the adjoining properties was minimised or avoided by designing an overland flow path within the motorway operations complex to the south and down the Hills Motorway corridor the internal road had safe gradients from the north end to the south for the use of heavy vehicles within the motorway operations complex. The reference to noise modelling report is assumed to be the NorthConnex Environmental Impact Statement (EIS) Appendix F: Technical Working Paper: - Noise and Vibration. Since the preparation of the EIS, the operational noise impacts of the project have been re-assessed based on the final detailed design, which included the location of the permanent noise walls. This assessment has been captured in the Operational Noise Management Report. The Operational Noise Management Report recommended a 4.8 metre noise wall on the western boundary of the motorway operations complex to reduce the operational noise impacts arising from the movement of various operational and maintenance vehicles during a 24 hour period, particularly during regular maintenance shut down periods. The location of the noise wall recommended in the Operational Noise Management Report was assessed as part of the design optimisation process and been found to be more effective in reducing operational noise impacts from both the road and the motorway operations complex. Landscaping Noise/retaining wall finish Request for information Deciduous plants preferred to be planted at rear of property so maximum light in winter but wall covered in summer. Trees to be no higher than noise wall to reduce shadowing. Need to hide height and impact of wall with appropriate height planting. Matt finish on wall to avoid light reflection in afternoon. For more information, refer to the NorthConnex Operational Noise Management Report at Preference for deciduous plants is noted however, there are no native deciduous plants endemic to the area. It is proposed that any tall plantings above the height of the noise wall be towards the south end of the property, and any tall trees be located in the planting area so as not to unduly overshadow the property. The project team proposes to use neutral colours with non-reflective finishes, to make the wall recessive in the environment. Landscaping plant list Landscaping species list provided for consideration. Noted NorthConnex Urban Design and Landscape Plan Stage 1B Submissions & Responses - August 2017 A1-7

60 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number Submission type (to CIG representativ e) 5/5/17 Issue Submission Project team response Incorporated in design Request for information Request for information Noise/retaining wall height and location Tunnel alignment map Tunnel alignment map provided for consideration. Noted Noise modelling report Operational Noise Management Report provided for consideration. Noted Further to my previous concerns about acoustics, the situation has changed since receiving details of Lend Lease s intentions. A TEN metre high wall, 2.7 metres from my boundary, is not only nuts, but is a major variation from the EIS. This is worse for most of the other Hillside Place residents whose homes are closer to the boundary than ours. On the EIS drawings they have no noise wall on the west side of the southern compound this is clearly an oversight in their planning, which will damage Lend Leases budget, however, the residents should not bear the brunt of their oversight. They have also raised the floor level of the covered service yard and the service road adjacent, by more than 2 metres. What did I expect, having used the EIS drawings as a reference, and given my 43 years in the construction Industry? 1/ I expected an approximately 5 metre high wall (the maximum height of a truck) 2/ The wall to be approximately 5 metres from our boundary (the width of the landscaped area shown on the EIS drawings) 3/The floor level of the covered service yard to remain at the level shown on the EIS drawings (approximately 1 metre higher than the existing level at the boundary) So total height approximately 6 metres, and approximately 5metres from the boundary I suggest that the acoustic wall on the Eastern side of the southern compound (which is shown on the EIS drawings) needs to be reinstated and a lesser wall, similar to my expectations noted above, constructed on the western boundary.ie. 2 walls. I believe Lend Lease intend to start the wall in June, so waiting for scheduled meetings isn t an option as far as I am concerned. See response provided above in relation to noise/retaining wall height and location. 15/5/17 Noise/retaining wall height and location Happy to discuss in person if my is not clear. Further to our previous meeting at our home, my wife and I would like to make the following comment Please reinstate the original acoustic walls, as shown on the EIS drawings, at the eastern side of the Southern Compound, and additionally, construct a lower less intrusive wall on the western side of the compound where we share a boundary. I believe a 5 metre high wall, the height of a truck exhaust, and a change in ground level of approximately 1 metre as shown on your EIS drawings would be appropriate. See response provided above in relation to noise/retaining wall height and location. To summarise 6 metres total change in level, from the current GL at our shared boundary. NorthConnex Urban Design and Landscape Plan Stage 1b Submissions & Responses August 2017 A1-8

61 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number Submission type 15/5/17 Issue Submission Project team response Incorporated in design Noise/retaining wall design I have skimmed through the Wilkinson Murray Acoustic Report and wish to make the following submissions, In addition to the below [shown above]. An acoustic reader was placed in my backyard for approximately 1 week in 2012, primarily to monitor truck noise on the and Pennant Hills Rd., the results of which are in the attached Acoustic Logic Report. Of particular interest are the Sleep disturbance peak noise events where the background noise level of 36dba suddenly jumps to 60dba due to a passing truck. Page 95 of the Wilkinson Murray Report (8.1.3) states The INP does not specifically address sleep disturbance from high noise level events. As the high level noise events are quite common, as noted in the Acoustic Logic Report, I believe these events must be taken into consideration in your design of acoustic barriers. Any assertion of reduced noise due to reduced traffic volumes, which may be correct throughout the day, will not be accurate when the Tunnel is shut down for maintenance a night and the trucks are back on Pennant Hills rd. File attached to submission: Acoustic Logic Report (letter 12 Jan 2012) The Operational Noise Management Report identifies (ONMR) no universally accepted criterion governing the likelihood of sleep disturbance.. It is not possible to establish absolute noise level criteria that would correlate to an acceptable level of sleep disturbance (for all or even a majority of people). The NSW Road Noise Policy ( provides additional discussion of sleep disturbance impacts due to intermittent noise, which has been implemented when assessing sleep disturbances from motorway operations complex activities. This indicates maximum internal noise levels below 50-55dBA are unlikely to cause awakening reactions. This level is equivalent to an external noise level of 60dBA with windows open. The nominated sleep disturbance level of 60Dba LAmax, has been applied to all of the areas west of the motorway operations complex. The ONMR adopts a 15 minute assessment period to ensure that the more stringent noise limits are adopted. This has resulted in a Project Specific Noise Level (PSNL) for the motorway operations complex, using both intrusiveness and amenity as a consideration in establishing the PSNL. Section 9.5 of the ONMR states A review of the predicted noise levels indicated that resultant noise levels are likely to comply with the PSNL at all residences. The single identified three-storey building that experiences exceedances of the PSNL is as a result of the motorway operations complex internal truck movements. Prior to NorthConnex construction, when the Acoustic Logic Report was undertaken, noise barriers consisted of low height brick garden walls about two metres high with frequent driveway openings. These walls do not perform the function of an acoustic noise wall and would contribute to the peak noise events referred to. Additionally, this property previously backed onto a large open space sloping steeply down from Pennant Hills Road. The frontage to Pennant Hills Road was an autoclaved aerated panel (Hebel) wall about 2 to 2.4 metres high with a staggered wall providing a gate opening to the site. The Acoustic Logic Report indicated the ineffectiveness of these walls as acoustic noise barriers. Noted Pennant Hills Road southbound Aug 2013 The recommended 4.8 metre noise wall on the western boundary will reduce the operational noise impacts from the movement of operational and maintenance vehicles over a 24 hour period, and particularly during regular maintenance shut down periods. It will provide the optimum mitigation of impacts when compared to the environment prior to construction. Gum Grove Place NorthConnex Urban Design and Landscape Plan Stage 1B Submissions & Responses - August 2017 A1-9

62 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number UDLP1b Gum Grove Place Submission type Meeting 20/4/17 Issue Submission Project team response Incorporated in design Noise/retaining wall benefit Landscaping Don t anticipate a problem [with retaining wall and noise wall]. Would like to see the Pennant Hills Road frontage of the permanent facility landscaped. Response noted. This property comes to a triangular point at the western boundary of the motorway operations complex. Views of the retaining wall and noise wall are across adjoining properties where it is not already screened by the existing vegetation. The motorway operations complex frontage to Pennant Hills Road will be landscaped. Details of this will be provided in UDLP Stage 2 to be exhibited in September Drainage Storm water needs to be managed as existing drainage problems. Previous uncontrolled drainage issues caused by overland flow are noted. Compound site drainage will be controlled with a whole of site piped drainage system, including tilting the internal road away from the western retaining wall. The internal road and noise wall are designed to minimise any 1:100 year overland flow to the adjoining properties, with the flow path directed to the south and through the Hills Motorway corridor land. Request for information Request for information Specify heights of permanent structures. Will there be adequate onsite parking for staff at the permanent [southern] facility? How many staff will be employed at the permanent [southern] facility? Heights of permanent structures will be provided in UDLP Stage 2 to be exhibited in September Site parking includes 34 car parking spaces for office staff under the motorway control centre building, two parking spaces for couriers, 11 open air spaces for contractors and visitors, six covered spaces for maintenance trucks and trailers, and on-road parking in the compound for three tow truck vehicles. Noted Noted Noted UDLP1b Gum Grove Place UDLP1b Gum Grove Place Meeting 27/4/17 Meeting 27/4/17 Landscaping Request for information Noise/retaining wall benefit Prefer mature plants to reduce the impact. Prefer an Illawarra Flame Tree, a Red Cedar and Magenta Lilly Pilly [to be planted at the rear of property]. The motorway operations complex will operate 24 hours per day, 365 days per year. Up to 40 permanent staff will be employed at the site, with the number of onsite staff increased during scheduled closures for maintenance. Request for specific species noted, observing that some species requested are included in the proposed landscaping species list. Some of the proposed species can be large spreading canopies. The final species selection will be appropriate to the location along the western boundary noting requests from the adjoining property owners. Need vegetation list Landscaping species list provided for consideration. Noted It [retaining wall and noise wall] will shield from noise and provide privacy Acknowledgement of retaining wall and noise wall to provide privacy and shield property from operational noise of the motorway operations complex noted. Noted Landscaping The planned trees are good and need to be high to cover the wall Prefer mature planting Needs to be well maintained (planting between wall and property) Acceptance of tall trees noted. Planting will consist of a mix of screening shrubs and canopy trees, initially planted with various size pots. Semi-mature planting pot sizes are defined as 75 to 100 litres, and planting pots of this size is dependent on physical access limitations and isn t possible at all locations. Consideration will be given to the use of larger pot sizes, noting that the overall time frame of growth required for plants to grow to a height to screen the combined retaining wall and noise wall is likely to be faster, or at least the same, with a smaller pot size. The planted area between the retaining wall and the property boundary is Roads and Maritime Services land, leased to the motorway operator, who will be responsible for the landscape maintenance. NorthConnex Urban Design and Landscape Plan Stage 1b Submissions & Responses August 2017 A1-10

63 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number UDLP1b Gum Grove Place Submission type Meeting 21/4/17 Issue Submission Project team response Incorporated in design Landscaping Bamboo and noxious weed must be eradicated for landscaping to be effective. The Landscape Maintenance Plan (LMP) will target removal of invasive and exotic plants from the motorway operations complex land. More information on the LMP is provided in UDLP Stage 2 to be exhibited in September UDLP1b Gum Grove Place Meeting 17/5/17 Request for information Fencing Request for information Request for information Request for information Request for information Request for information Request for information Request for information Request for information How often will vegetation be maintained? Don t like the proposed wire boundary fencing. Would prefer colourbond fencing. Current control measures for weeds within the project footprint are detailed in the Construction Environment Management Plan, Flora and Fauna Management Sub Plan at documents/construction-environment/gen-gen-llb-2671-all-llb qa-pl construction-flora-and-fauna-management-sub-plan-appendixb4.pdf?sfvrsn=4. The Landscape Maintenance Plan specifies monthly maintenance in the initial stages (12 months for local areas and 24 months for the motorway area) by the contractor to ensure the establishment of landscaping. This includes plant replacement, hand watering and weeding. Maintenance thereafter is the responsibility of the motorway operator. More information is provided in UDLP Stage 2 to be exhibited in September Chainwire boundary fencing in a recessive colour to the back wall of the property is recommended to create a sense of openness to the backyards of the respective properties. However in accordance with the property owner s preference, it is proposed that a new Colorbond fence be installed on the boundary. The chainwire fence would be installed on the motorway operations complex land. The chainwire fence would be visible above the Colorbond fence from the neighbourhood side. Information on plan for bamboo removal Plan for bamboo removal provided for consideration. Noted Link to tunnel alignment map Tunnel alignment map provided for consideration. Noted Link to RMS acquisition information Roads and Maritime Services acquisition guidelines provided for information. Noted Cross section for 20 Gum Grove Cross section of property in relation to permanent motorway facilities provided Height of existing temporary hoarding for consideration. Height of existing temporary hoarding provided for consideration. Noted More information on native plants proposed for planting Landscaping species list provided for consideration. Noted Copy of artist impression of MOC western retaining wall Artist impression of motorway operations complex western retaining wall provided for consideration. How far will my property be from the ventilation outlet? The ventilation outlet is approximately 30 metres from the boundary between 20 Gum Grove and the motorway operations complex land. The outlet is height is set at RL 147 by CoA B2(a) and is sectioned so that different parts of the outlet are used according to traffic volumes and to maintain the minimum 13metres/second discharge velocity and ensure dispersion at high level. The full cross section of the outlet is used with higher volumes of traffic. The far side of the outlet is approximately another 15 metres further away towards Pennant Hills Road, and approximately 28 metres above the ground floor level of 20 Gum Grove place (assumed floor level RL119.0). Noted Noted Noted Noted NorthConnex Urban Design and Landscape Plan Stage 1B Submissions & Responses - August 2017 A1-11

64 UDLP Stage 1b - Appendix 1 Submissions and Responses Submission number Submission type Issue Submission Project team response Incorporated in design 7/6/17 Fencing Don t like the proposed wire boundary fencing. Would prefer colorbond fencing. We totally against the proposal of replacing the colorbond fencing with cheap wire fencing. The reasons are: This is an act of invading our privacy, it makes us feel like we are in the jail There is no logical reason given for the proposal We prefer a taller colour bond fence in its place The property will not have a line of sight to working areas within the motorway operations complex, aside from an external fire stair from the upper corridor of the ventilation fan room. The reason for the proposal is to construct the motorway operations complex within the project property boundaries. Chainwire boundary fencing in a recessive colour to the back wall of the property is recommended to create a sense of openness to the backyards of the respective properties. Noise/retaining wall alignment Noise/retaining wall colour It is unacceptable that the distance between the retaining wall and the existing fence at the southern end is so narrow, only 0.2m apart. The reasons are: Violate Council building code There should be a similar distance apart as per the northern end, i.e. about 2m apart. Plenty of space on the other side of the proposed wall No reason to narrow it at southern end Invasion of privacy Safety concern. The Noise wall need to be in neutral colour to blend into the environment. We strongly against the appearance of a raw concrete wall. However in accordance with the property owners preference, it is proposed that a new Colorbond fence be installed on the boundary. The chainwire fence would be installed on the motorway operations complex land and would be visible above the Colorbond fence from the neighbourhood side. The chainwire fence satisfies requirements for security of operational facilities. Landscaping is proposed in front of the noise wall to minimise visual impact. In accordance with the property owner s preference, the noise wall design has been modified to provide an offset of in excess of one metre from the property boundary at the southern extent of the property. This offset will widen to 2.7 metres at the northern extent of the property. This is the maximum offset that can be provided due to the configuration of the property boundaries and the requirement for vehicle access to the substation and water treatment plant. The height of the noise wall is designed to mitigate the noise impacts of the motorway operations, in particular the movement of vehicles within the motorway operations complex. It also shields properties from the internal road lighting. It is engineered to ensure a safe structural design. The project team proposes to use neutral colours with non-reflective finishes, to make the wall recessive in the environment. The design includes a gradation of colours to blend with the ground and sky, with darker, neutral colours at the base through to lighter base colours at the top. The patterns of the retaining wall are extended to the noise wall, providing an integrated retaining and noise wall design. Both smooth face and split face blocks are used to soften visual impacts. NorthConnex Urban Design and Landscape Plan Stage 1b Submissions & Responses August 2017 A1-12