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Appendix B – Landscape Design Report

Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

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Page 1: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

Appendix B – Landscape Design Report

Page 2: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

MILL ROAD STRUCTURE PLANLANDSCAPE ANALYSIS AND RECOMMENDATIONS

AUGUST 2018

DRAFT

Page 3: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

2MILL ROAD STRUCTURE PLAN | LANDSCAPE ASSESSMENT AND RECOMMENDATIONS | AUGUST 2018

DRAFT

CONTEXT AND SITE ANALYSIS

23/05/2018 District Plan Interactive Mapping Service - Interactive Web Map

https://mangomap.com/wdc/maps/71361/district-plan-interactive-mapping-service?print-preview=true&preview=true#zoom=13&lat=-39.946269&lng=175.037729&layergroups=wdc%3A6eee3ea0-2e06-11e8-b559-06765ea3034e,wdc%3A22c91a92-102c-11e8-8e85-06765ea3034e,wdc%3A898ffddc-0149-11e8-81dd-06765ea3034e&bck=bingmap&permalink=true&hid_lg=wdc%3A09d42e54-013c-11e8-b765-06765ea3034e,wdc%3Aea07c2ac-1784-11e8-82af-06765ea3034e,wdc%3A02285d34-0703-11e8-99c2-

23/05/2018 District Plan Interactive Mapping Service - Interactive Web Map

https://mangomap.com/wdc/maps/71361/district-plan-interactive-mapping-service?print-preview=true&preview=true#zoom=13&lat=-39.933565&lng=174.944143&layergroups=wdc%3A6eee3ea0-2e06-11e8-b559-06765ea3034e,wdc%3A22c91a92-102c-11e8-8e85-06765ea3034e,wdc%3A898ffddc-0149-11e8-81dd-06765ea3034e&bck=bingmap&permalink=true&hid_lg=wdc%3A09d42e54-013c-11e8-b765-06765ea3034e,wdc%3Aea07c2ac-1784-11e8-82af-06765ea3034e,wdc%3A02285d34-0703-11e8-99c2-

WhanganuiCBD

Wanganui Airport

Whanganui Rive

r

Study Area

Coastal Residential ManufacturingOuter CommercialRural General

Central CommercialRural Lifestyle

Arts & CommerceResidentialRural Production

Neibourhood CommercialCoastal Environment Reserves & Open Spaces

SITE CONTEXT

SITE CONTEXT - LAND USE

The project site is currently predominantly rural in character with flat to rolling pasture interspersed with scattered stands of trees and shelter belts at paddock boundaries.

The site is largely bordered by existing rural land use of a similar character.

The western boundary of the site is bordered by low density residential lots on Waitai Street with Castlecliff Golf Course on the opposite side of the road beyond.

Aranui Primary school is located on the south western edge of the site.

The proposed industrial land use for the site will be somewhat out of character with the existing landscape and surrounding context. As such, it is expected that an appropriate level of threshold treatment will be necessary to mitigate the potentially abrupt change in character, scale, and visual outlook between the project site and its surrounding context. This will be particularly important on the southern and western boundaries where the project site adjoins existing residential areas. The nature of the topography on the northern and eastern boundaries (rising away from the site) is expected to largely mitigate any potential visual effects of development from any northern and eastern visual catchments.

Page 4: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

1MILL ROAD STRUCTURE PLAN | LANDSCAPE ASSESSMENT AND RECOMMENDATIONS | AUGUST 2018

DRAFT

LAND USE

Manufacturing Existing

Bus Routes

Reserves & Open Space

Archaeological Site

Rural General

Heritage Site

Rural LifestyleResidential Proposed

Bus Stops

Neighborhood Commercial

0m 200m 600m

SCALE 1:10000 (A3)

ANALYSIS

Man

uka

St

Man

uka

St

Man

uka

St

Wai

tai S

t

Wai

tai S

t

Wai

tai S

t

Mill RdMill Rd

Man

uka

St

Wai

tai S

t

Mill RdMill Rd

LundonPark Balgownie

Reserve

Castlecliff Golf Course

Castlecliff Domain

Mosston Park

Aranui School

LundonPark

Castlecliff Golf Course

Castlecliff Domain

Mosston Park

Aranui School

LundonPark

Castlecliff Golf Course

Castlecliff Domain

Mosston Park

Aranui School

LundonPark

Castlecliff Golf Course

Castlecliff Domain

Mosston Park

Aranui School

ManufacturingArts & CommerceResidential

Belmont Links Golf Course Belmont Links Golf Course

Belmont Links Golf Course Belmont Links Golf CourseHERITAGE

ROAD NETWORK

BUS ROUTES

Page 5: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

2MILL ROAD STRUCTURE PLAN | LANDSCAPE ASSESSMENT AND RECOMMENDATIONS | AUGUST 2018

DRAFT

High Presure Gas LineExisting Open DrainsStormwater Pipes Water Pipes Wastewater PipesProposed Open Drains

0m 200m 600m

SCALE 1:10000 (A3)

Swamp

Shelter BeltsParks Stands of Trees

Pond

0.5M Contours

ANALYSIS

Man

uka

St

Wai

tai S

t

Mill Rd

Man

uka

St

Wai

tai S

t

Mill Rd

Man

uka

St

Wai

tai S

t

Mill Rd

Man

uka

St

Wai

tai S

t

Mill Rd

LundonPark

Castlecliff Golf Course

Castlecliff Domain

Mosston Park

Aranui School

LundonPark

Castlecliff Golf Course

Castlecliff Domain

Mosston Park

Aranui School

LundonPark

Castlecliff Golf Course

Castlecliff Domain

Mosston Park

Aranui School

Belmont Links Golf Course Belmont Links Golf Course

Belmont Links Golf Course Belmont Links Golf CourseSERVICESHYDROLOGY

EXISTING OPEN SPACES & SIGNIFICANT VEGETATION TOPOGRAPHY

LundonPark

Castlecliff Golf Course

Castlecliff Domain

Mosston Park

Aranui School

BalgownieReserve

Page 6: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

30m 100m 300m

SCALE 1:5000 (A3)

MILL ROAD STRUCTURE PLAN | LANDSCAPE ASSESSMENT AND RECOMMENDATIONS | AUGUST 2018

DRAFT

SITE CONSTRAINTS

ARANUI SCHOOL

Proposed Roads Proposed SharedpathHigh Pressure Gas LineStormwater PipesWastewater PipesWater PipesExisting Open Drains Potential Connection

Man

uka

St

Wai

tai S

t

Mill Rd

Page 7: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

4MILL ROAD STRUCTURE PLAN | LANDSCAPE ASSESSMENT AND RECOMMENDATIONS | AUGUST 2018

DRAFT

RECOMMENDATIONS

LANDSCAPE BUFFER

Existing shelter belts within, and surrounding, the project site provide an example of an effective landscape element or tool to create a visual buffer between future industrial areas and surrounding residential land use and rural landscapes. Planted shelter belts provide a contextually appropriate mechanism to mitigate the potential visual effects resulting from the expected change in building scale and activity associated with the development of industrial buildings and activities within the site.

Potential landscape buffer treatment is proposed on the southern and western boundaries where the project site adjoins existing residential areas. This buffer area would incorporate a shared walking and cycling path, a planted open drainage channel, visually permeable fencing, and boundary tree planting with lifted canopies to maintain clear sight lines across the site boundary.

Any buffer treatment between the project site and the existing residential areas on the southern and western boundaries should allow for the future redevelopment of these residential areas, in particular allowing for future potential connections to facilitate efficient access and connectivity.

Landscape buffer treatment is not proposed on the northern and eastern boundaries as the topography on these edges of the site (rising away from the site) largely negate the benefit of landscape buffering. Any potential visual effect on these boundaries is expected to be minor and largely mitigated by the nature of the topography.

The interface between the Aranui School grounds and future industrial area would also potentially benefit from landscape buffer treatment to mitigate visual and acoustic effects of future industrial buildings and activities.

CONNECTIVITY

Physical permeability between the proposed industrial area and the surrounding road/street network will provide route options for different travel modes. Opportunities to provide lower cost walking and cycling connections outside of existing and proposed road connections should be explored where appropriate - particularly where these connections will provide good connectivity to and from local residential areas.

Additional walking and cycling connections improve overall safety by providing route options and increased passive surveillance through increased activity and ‘eyes on the street’.

STORMWATER MANAGEMENT AND LANDSCAPE AMENITY

The integration of walkways and low maintenance planting with stormwater conveyance and treatment areas provides a means of enhancing and activating these otherwise utilitarian areas. Stacking functions together in these areas has the effect of increasing accessibility and connectivity, and improving ecological and aesthetic values to create an efficient, high amenity, living green corridor.

CPTED

Crime Prevention Through Environmental Design (CPTED) is a crime prevention philosophy based on proper design and effective use of the built environment leading to a reduction in the incidence and fear of crime, as well as an improvement in quality of life. CPTED reduces criminal opportunity and fosters positive social interaction among legitimate users of space. The emphasis is on prevention rather than apprehension and punishment.

The National Guidelines for Crime Prevention through Environmental Design in New Zealand define seven qualities that characterise well designed, safer places:

1. Access: Safe movement and connectionsPlaces with well-defined routes, spaces and entrances that provide for convenient and safe movement without compromising security.

2. Surveillance and sightlines: See and be seenPlaces where all publicly accessible spaces are overlooked, and clear sightlines and good lighting provide maximum visibility.

3. Layout: Clear and logical orientationPlaces laid out to discourage crime, enhance perception of safety and help orientation and way-finding.

4. Activity mix: Eyes on the streetPlaces where the level of human activity is appropriate to the location and creates a reduced risk of crime and a sense of safety at all times by promoting a compatible mix of uses and increased use of public spaces.

5. Sense of ownership: Showing a space is cared forPlaces that promote a sense of ownership, respect, territorial responsibility and community.

6. Quality environments: Well designed, managed and maintained environmentsPlaces that provide a quality environment and are designed with management and maintenance in mind to discourage crime and promote community safety in the present and the future.

7. Physical protection: Using active security measuresPlaces that include necessary, well designed security features and elements.

The recommended landscape buffers and stormwater treatment areas should be configured to reduce the likelihood of creating CPTED issues, particularly with regard to maintaining clear sight lines and maximising visibility for street users. Street trees and boundary planting should have canopies maintained to above eye level and visually permeable fencing should be encouraged wherever possible and appropriate.

Stormwater conveyance channels are recognised as being particularly problematic from a CPTED perspective - particularly where this infrastructure is located between private land uses with little to no physical access or passive surveillance. Integrating this infrastructure into the edge of the street corridor results in these areas benefiting from the increased activity and passive surveillance provided by pedestrians and drivers using the street.

Providing choices for route options also improves personal safety by reducing predictable movement patterns.

STREET TREE PLANTING

The Whanganui District Council Street Tree Strategy 2016 outlines the following Vision and principles with regard to street tree planting:

Vision statementWhanganui is renowned nationally for its treescape which enhances our vibrant, cultural living environment.

PrinciplesThe following key principles underpin the Street Tree Strategy:

• The Council wishes to emphasize the value of its street trees, and the importance placed on the role of the Council as the guardian of this tree stock.

• In its decision making Council places a high value on the benefits of trees to the community as a whole rather than costs/benefits to private individuals.

• The Council strives to maintain the integrity of Whanganui’s treescape for future generations while allowing flexibility for necessary tree removal and replacement.

Section 2.0 of the strategy further identifies that:

2.1 There is a need to ensure the opportunity for integrated street plantings are sufficiently considered during subdivision or street upgrades. Poorly considered or late consideration of trees during developments can lead to insufficient space for plantings, root severance during works or loss of street trees with no replanting’s.2.2 In relation to street design and tree planting, the New Zealand Standard (NZS 4404) and companion document have relevant standards, which need to be adhered to as a minimum requirement. The standards include minimum separation distances and site distances for tree planting from intersections, light standards, driveways bus stops and other inbuilt infrastructure.

Of particular relevance, the strategy sets the following objectives with regard to the goal of integrating trees into the future development of the urban landscape.

3.1 Ensure trees are seen as essential assets by requiring trees to be considered and provided for in future urban development.3.2 Require developers undertaking new subdivisions to engage with Council Parks Department in the planning stages to ensure street trees are included in the design.3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting.3.4 Engage with developers and property owners to increase awareness of the values and benefits of trees in developments.3.5 Consider alternative design options for street tree planting.

It is recommended that a street tree framework plan is developed for the site as a key component of the next stage of public realm/street planning and design. This high level plan would identify an overarching structure for street tree planting throughout the site and provide guidance on suitable species and locations within the road corridor.

Page 8: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

Level 2, 52 The Square, Palmerston North, 4410 T 64 6 353 1800 F 64 6 353 1801 E [email protected] W www.ghd.com

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Mill Road

Mosston Road

Fitzherbert Avenue

Glenn

Stree

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Lee Street

G:\51\12503092\GIS\Maps\Working\Mill Rd Storage Opt 1.mxd© 2019. Whilst every care has been taken to prepare this map, GHD (and DATA CUSTODIAN) make no representations or warranties about its accuracy, reliability, completeness or suitability for any particular purpose and cannot accept liability and responsibility of any kind (whether in contract, tort or otherwise) for any expenses, losses, damages and/or costs (including indirect or consequential damage) which are or may be incurred by any party as a result of the map being inaccurate, incomplete or unsuitable in any way and for any reason.

Map Projection: New Zealand Map GridHorizontal Datum: New Zealand 1949Grid: GD 1949 New Zealand Map Grid

Whanganui District CouncilMill - Mosston SW: Option 1

Figure 1

Job NumberRevision 0

51-33357

21 Mar 2019o Date

Data source: GHD: catchment, staging (2016); WDC: wastewater assets. Created by:CJAnderson

Paper Size A3 LEGENDExisting Open Drains

! SW ManholesSW Pipes

Bund - Mill Pond Opt 1Overflow WeirMill Road Storage Drain

Make sure existing culvert is not connected into New Mosston SW main, Also remove any orifice plate that may be in the existing culvert

Connects to Mill Road SW Manhole.SWMH1 see design plans.

replaces greyed out future section

Connects to Mosston SW manholeSWM11498. See design.

Page 9: Appendix B – Landscape Design Report · in the design. 3.3 Develop an Urban Streetscape Plan which provides guidance on future tree planting. 3.4 Engage with developers and property

6MILL ROAD STRUCTURE PLAN | LANDSCAPE ASSESSMENT AND RECOMMENDATIONS | AUGUST 2018

DRAFT

INDICATIVE ROAD/STREET CONDITIONS

TYPICAL ROAD SECTION

Street Tree in Berm2.5M Pedestrian Path Parking / BermStreet Tree in Planted Berm Road Width to Accommodate On-street Cycling Parking/Berm

TYPICAL ROAD SECTION - SOUTHERN BOUNDARY

Boundary Shelterbelt Planting &Visually Permeable Fence Drainage Channel / Swale Planted Berm Street Tree in Berm3M Shared Path Parking / Berm Road 2.5M Pedestrian Path