Molonglo Stage 2 Infrastructure Planning

Tony Connell Brown Consultingi k AC G S

Planning

Patrick Paynter ACT Government ESDDMisha Beljic ACT Government ESDD

27 July 201127 July 2011

f t i bilitfocus on sustainability • 60,000 people within 15km of , p p

City centre• Encourage public transport use

with fast and frequent service• Efficient traffic network• Transit-oriented development• Pedestrian and child friendly• Water saving measures• Stormwater reuse for irrigation

and ponds• Environmental protection• Changes to the Territory Plan to

establish ‘solar fence’ principle.

stagingg gDevelopment in three stages:

Stage 1 (current) Stage 1 (current)- first suburbs in Molonglo Valley - Coombs, Wright and North Weston

St 2 (5 10 )• Stage 2 (5-10 years)- planning and engineering investigations have commenced

Stage 3 (10 years+)- last area to be developed.

Environmental investigationsEnvironmental investigations•Pink tailed worm lizard

(aprasia parapulchella)

•Raptors and parrot species

B G W dl d•Box Gum Woodland

•Natural Temperate Grassland

•Riparian habitatRiparian habitat

•Bush fire protection and mitigation

•European and Aboriginal heritage

•Soil contamination and geotechnical conditions

•Water management, water quality and environmental flows

T it d C lth bli ti (EIS EPBC R f l/SA)•Territory and Commonwealth obligations (EIS, EPBC =- Referral/SA)

Infrastructure implementation processes(concurrent with planning and environmental processes)(concurrent with planning and environmental processes)

• Pre‐feasibility investigations – planning and scheme options analysis• Feasibility studies – options, technical detail, costs, recommendations• Environmental assessments – ecology, heritage, soils, water – EIA/EIS/EPBC• Funding identification and business cases – Capital Works• Design and documentation – Development Application, Detailed design, 

tender documentation.• Construction stage and handover/commissioning• Operation and maintenance.

Organisations implementing and consulted• Government – ESDD (ACTPLA and DECCEW), TAMSD, EDD (LAPS), LDA, ( ), , ( ), ,

Treasury, NCA, DEWHA, other• Non‐government – ACTEW, ActewAGL‐ water, sewer, energy, Jemena, Telstra, 

focused community consultation

Stormwater Management• Numerous options for stormwater• Numerous options for stormwater

management have been evaluated

• A number of options from a large lake to smaller lakes and off line ponds have beensmaller lakes and off-line ponds have been investigated

• These options have been investigated using a TBL approach with agencies anda TBL approach with agencies and environmental group representatives

Topography and Slope AssessmentTopography and Slope Assessment

• Elevation approximately 600 AHD600m AHD

d f l• Terrain comprised of low hills to undulating slopes with isolated moderatelywith isolated moderately inclined rolling hills

Site GeologySite Geology• Geology:Geology: 

– Site located within the Mount Painter Volcanics forming part of the Hawkins Volcanic Suite

– Rock masses (dacite, rhyodacite)– Soil (types of soil)– Tectonics (faults and seismicity)Tectonics (faults and seismicity) – Hydrogeology (connectivity, yields 

and groundwater quality)

• Geotechnical propertiesGeotechnical properties – Seven Soil Types – Excavation conditions 

Use of material on site– Use of material on site– Slope, cut/fill batter slope stability

Contaminated SitesContaminated Sites

C t i ti i ti ti• Contamination investigations– ESA Phase 1– Areas of Environmental Concerns – Types of contaminants (potential 

hydrocarbon associated with refuelling vehicles, potential heavy metals potential asbestosmetals, potential asbestos contaminated waste , pesticides etc0

• Future InvestigationsFuture Investigations– Contaminated site auditor– ESA Phase 2 investigations– Remedial Action Plan– Remedial Action Plan– Remediation

Molonglo Major Roads Previous Studies

The arterial roads delivery to minimise:· energy usage and emissions· noise generation· impact on flora and fauna· visual impact and earthworks· construction cost

Impact on surrounding road networkImpact on surrounding road network• Duplication of Cotter Road east of Tuggeranong Parkway between 

considering an upgrade of the Yarra Glen interchange

• Traffic growth on Coppins Crossing Road causing increased traffic and congestion on Coulter Drive. Peak hour traffic congestion on Coulter Drive may lead to a strategic decision to duplicate Coulter Drive. 

• The early construction of the Bindubi Street extension through to John Gorton Drive would delay the need for upgrading Coulter Drive, but would hasten the need to duplicate Bindubi Street. 

2031 t ffi f t t th t b th C lt D i d Bi d bi• 2031 traffic forecasts suggest that both Coulter Drive and BindubiStreet will need to be duplicated in the longer‐term

• Widening Parkes Way and improving the operation of the BundubiStreet / William Hovell Drive intersection. 

• Traffic growth on Streeton Drive, particularly prior to 2021, should be managed to contain the use of Heysen Street. 

Molonglo 2 Road Network Considerations

PDF Consulting Consortium 2011g

AECOM 2010AECOM 2010

Molonglo 2 Arterial Roads by 2013 14Molonglo 2 Arterial Roads by 2013‐14

M l l 2 PDF• Molonglo 2 PDF Arterial Road Delivery to support the first land releases

Traffic Generation and Distribution

Molonglo 2 Transport Modelling

Major Roads Typical Cross Sections

Public Transport Concept

M l l St 2 Pl i B k d AECOM 2010Molonglo Stage 2 Planning Background AECOM 2010

Molonglo PT Strategy StudiesMolonglo PT Strategy Studies

PDF Study 2011ACT Strategic Public Transport Network Plan, MCR for TAMSD

Cycling Pedestrian and Equestrian Provisions

Molonglo 2 Acoustic Assessment Traffic NoiseTreatment options:

•Setback distance

•At source (various pavement options)

•Treatments to dwellings including upgraded external walls soundratedupgraded external walls, soundratedglazing, building orientation (to allow for quiet balconies and formal external open spaces)

Molonglo Stage 2

Presenter Tony ConnellPresenter: Tony Connell

Molonglo Stage 2 g g

Pl i D i F k (PDF)Planning Design Framework (PDF)Hydraulic Master Plan & Concept DesignHydraulic Master Plan & Concept Design

For Environment & Sustainable Development Directorate (ESDD)

PDF Project TeamPDF Project Team

Introduction

• Project Locality• Site Context• Development Layouts • Hydraulic Services Master Plans• Cycle/Recreation Routes

Project Locality

• Land Area: 500ha • Predominantly north facing• Predominantly north facing 

but undulating• Significant frontage toSignificant frontage to 

Molonglo River• Environmental sensitiveEnvironmental sensitive 

area

Slope Analysis

• Half of land > 10% slope• Only 23 ha < 5% slope

Ecological Features

Constraints Analysis

Bushfire Management

Development Layout

First 3,000 Dwellings

Master Plans ‐ Stormwater

Master Plans – Stormwater WSUD Compliant with ACT Waterways Code (WSUD) for stormwater 

li k fl i i kquality targets, peak flow attenuation, rainwater tank provisions, etc.

Based on awhole of site approach Based on a whole of site approach Using a stormwater quality treatment chain approach All f t t h ti d (i i ti f Allows for stormwater harvesting and reuse (irrigation of 

public open spaces primarily) Meet the ACT Stormwater Quality Regional Targets Meet the ACT Stormwater Quality Regional Targets

Master Plans – Stormwater WSUD

T iTerrain too steepSWALEROOFS

GPT BIORETENTION BASINS

STORMWATER QUALITY

CONTROL POND

Master Plans ‐ Sewer

Master Plans – Sewer Bridge Options

Master Plans – Water

Cycle/Recreation Route

Questions:Questions: