PLANNING ASSESSMENT REPORT

PRIORITY DEVELOPMENT AREA: DEVELOPMENT APPLICATION FOR MATERIAL CHANGE OF USE

TASK NUMBER: LS-009

JANUARY 2017

Controlled Document – Change Register

Section Revision Change Description Initial Date Changed

A All Draft for review CS 16/11/2016

B All Technical review comments addressed CW 13/1/2017

C All Format of draft report AH 13/1/2017

Editorial comments addressed/distribution to program D All CW/CS 18/1/2017 review

E All Program review comments addressed CS 25/1/2017

1.0 All Finalise report for development application AH 27/1/2017

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TABLE OF CONTENTS

EXECUTIVE SUMMARY ...... 1 1. INTRODUCTION ...... 3 2. APPLICATION DETAILS ...... 4 Applicant details ...... 4 Site details ...... 4 Type of development application ...... 5 Assessment manager ...... 5 Referral agencies ...... 5 Application fees ...... 5 Supporting documentation ...... 5 3. THE SITE ...... 7 Location and characteristics ...... 7 Land tenure ...... 9 3.2.1 Parts of the WWTP within the PDA ...... 9 3.2.2 Parts of the WWTP outside of the PDA ...... 9 Land Use ...... 9 Surrounding land use ...... 9 Easements and rights of use ...... 12 Access and servicing ...... 12 4. ENVIRONMENTAL ASSESSMENT ...... 14 Environmental values ...... 14 4.1.1 Sensitive receptors ...... 14 4.1.2 Soils ...... 15 4.1.3 Groundwater ...... 16 4.1.4 Watercourses ...... 16 4.1.5 Wetlands ...... 16 4.1.6 Coastal land ...... 16 4.1.7 Fisheries habitat ...... 16 4.1.8 Biodiversity areas ...... 16 4.1.9 Vegetation ...... 19 4.1.10 Threatened species and species habitat ...... 21 4.1.11 Protected flora and fauna species ...... 21 4.1.12 Animal breeding places ...... 21 4.1.13 Koala habitat ...... 22 4.1.14 Cultural heritage ...... 22 4.1.15 Native Title notification ...... 22 Land-based risks ...... 23

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4.2.1 Bushfire ...... 23 4.2.2 Flooding ...... 23 4.2.3 Steep slopes ...... 26 4.2.4 Acid sulphate soils ...... 26 4.2.5 Contaminated land ...... 26 4.2.6 Fire ants ...... 26 4.2.7 Unexploded ordnance ...... 26 4.2.8 Invasive and pest species ...... 26 5. THE PROPOSAL ...... 27 Project need ...... 27 Staging ...... 27 Concept design ...... 29 5.3.1 The WWTP ...... 29 5.3.2 Wetland ...... 30 Land requirements ...... 31 Operational considerations ...... 31 5.5.1 Activities and location ...... 31 5.5.2 Hours of operation ...... 31 5.5.3 Traffic and access ...... 31 5.5.4 Infrastructure servicing ...... 32 5.5.5 Landscaping ...... 32 5.5.6 Odour management ...... 33 5.5.7 Noise management ...... 33 5.5.8 Flora and fauna management ...... 33 5.5.9 Waste management ...... 34 5.5.10 Flooding and stormwater ...... 34 5.5.11 Water quality ...... 34 5.5.12 Operational management ...... 35 6. PLANNING ASSESSMENT ...... 36 Sustainable Planning Act 2009 ...... 36 Economic Development Act 2012 ...... 36 6.2.1 Purpose of the Act ...... 38 Priority development area development scheme ...... 38 6.3.1 Type of development ...... 38 6.3.2 Level of assessment ...... 39 6.3.3 Public notification ...... 39 6.3.4 PDA-wide criteria ...... 40 6.3.5 Zone intent ...... 41

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PDA guidelines and practice notes...... 42 Relevant state interests ...... 45 PDA preliminary approvals in force ...... 46 SP Act preliminary approvals in force ...... 46 Related legislation ...... 47 6.8.1 South East Queensland Regional Plan...... 47 6.8.2 Environmental Protection Act 1994 ...... 47 7. CONCLUSION ...... 49 8. RECOMMENDATIONS ...... 50 9. REFERENCES ...... 51

TABLES

Table 2-1: Site details – land within PDA ...... 4 Table 2-2: Site details – land outside PDA ...... 5 Table 3-1: Existing easement information for the Cedar Grove WWTP site ...... 12 Table 4-1: Sensitive receptors ...... 14 Table 5-1: Release quality characteristics – at outlet to WWTP ...... 30 Table 5-2: Release quality characteristics – at Logan River outfall ...... 30 Table 5-3: Two-way trips ...... 32 Table 6-1: Summary of PDA-wide assessment outcomes ...... 40 Table 6-2: Summary of applicable PDA guidelines ...... 43 Table 6-3: Assessment of interface issues ...... 44 Table 6-4: State interest assessment ...... 45

FIGURES

Figure 3-1: Site location ...... 8 Figure 3-2: Zoning of site and surrounding area under the Logan Planning Scheme ...... 11 Figure 3-3: Proposed WWTP infrastructure in relation to easements ...... 13 Figure 4-1: Sensitive receptors in proximity to the site ...... 15 Figure 4-2: Biodiversity area mapping ...... 18 Figure 4-3: Regional ecosystem and remnant vegetation mapping ...... 20 Figure 4-4: Bushfire hazard potential ...... 24 Figure 4-5: Cedar Grove WWTP site in relation to the Q100 flood inundation level ...... 25 Figure 5-1: Anticipated staging strategy of the Cedar Grove WWTP ...... 28 Figure 5-2: Conceptual overview of Membrane Bioreactor process ...... 29 Figure 6-1: Location of Cedar Grove WWTP site in relation to the Greater Flagstone PDA ...... 37

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APPENDICES

Appendix A WWTP concept site layout Appendix B Ecological assessment Appendix C Aboriginal cultural heritage search Appendix D Environmental management register / contaminated land searches Appendix E Infrastructure services report Appendix F Landscape concept plan Appendix G Odour assessment Appendix H Noise assessment Appendix I Site based management plan Appendix J Water quality modelling Appendix K Pre-application correspondence from EDQ Appendix L Assessment against the relevant PDA-wide criteria

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Acronyms and Abbreviations

ADWF Average Dry Weather Flow AHD Australian Height Datum ARI Average Recurrence Interval ASS Acid Sulphate Soils CEMP Construction Environmental Management Plan CHMP Cultural Heritage Management Plans CLR Contaminated Land Register DATSIP Department of Aboriginal and Torres Strait Islander Partnerships DEHP Department of Environment and Heritage Protection DILGP Department of Local Government and Planning DLA Designated Landscape Areas EA Environmental Authority ED Act Economic Development Act 2012 EDQ Economic Development Queensland EHMP Ecosystem Health Monitoring Program EMR Environmental Management Register EP Equivalent Persons EP Act Environmental Protection Act 1994 ERA Environmentally Relevant Activity EVNT Endangered, Vulnerable and Near Threatened FHA Fish Habitat Area ha Hectare HWC Healthy Waterways and Catchments km Kilometre L Litre Logan WIA Logan Water Infrastructure Alliance m Metre MCU Material Change of Use MEDQ Minister for Economic Development Queensland mg Milligrams mL Millilitre ML Megalitre MNES Matters of National Environmental Significance NC Act Nature Conservation Act 1992 PDA Priority Development Area ROL Reconfiguring of A Lot ROU Right of Use SBMP Site Based Management Plan SEQ South East Queensland SMP Species Management Program SP Act Sustainable Planning Act 2009 SPRP State Planning Regulatory Provisions TN Total Nitrogen

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TP Total Phosphorus TSS Total Suspended Solids UXO Unexploded Ordnance VM Act Vegetation Management Act 1999 WWTP Wastewater Treatment Plant

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EXECUTIVE SUMMARY

The Greater Flagstone and Yarrabilba Priority Development Areas (PDAs), which are part of the Logan South region, are key greenfield development areas in South East Queensland (SEQ). The population of these areas is forecast to increase from around 2,000 people, to an ultimate population of more than 200,000 people.

The Logan Water Infrastructure Alliance (LoganWIA) on behalf of Logan City Council (Council) oversees water and sewerage infrastructure services for the City of Logan. The provision of wastewater treatment infrastructure is critical to support current and future growth in the Greater Flagstone PDA. The construction of a permanent wastewater treatment plant (WWTP) was identified as the most appropriate solution to address the need for additional wastewater treatment infrastructure, and the proposed location of this WWTP is on a 203.9 hectare (ha) site currently owned by Council at Cedar Grove.

Purpose This Planning Assessment Report has been prepared to support an application for PDA Development Permit for a Material Change of Use (MCU) for ‘utility infrastructure’ related to the construction of the Cedar Grove WWTP. Under the Greater Flagstone PDA Development Scheme (the Development Scheme), the Cedar Grove WWTP, as utility infrastructure, is assessable development (permissible). The report provides an assessment of the compliance of the Cedar Grove WWTP with the outcomes sought by the Economic Development Act 2012 (ED Act) and the relevant requirements of the Greater Flagstone PDA Development Scheme.

The proposal An assessment of options has been undertaken to select the preferred treatment technology and effluent management strategy. Based on the results of the cost and non-cost comparison and risk analysis of the options, the preferred treatment technology for the WWTP was selected as a membrane bioreactor (MBR) and the preferred effluent management strategy was the tertiary treatment of effluent though a constructed surface flow wetland to achieve nutrient levels of 0.5 mg/L total phosphorus and 1 mg/L total nitrogen (median values) prior to continuous discharge to the Logan River.

The proposal consists of the construction and operation of:

• An MBR plant of 20,000 EP capacity treating average dry weather flows (ADWF) of 3.3ML/day)

• 10 ha of constructed wetlands with capacity to treat up to 6.5xADWF

• Flows of >5 x ADWF bypassing secondary treatment but receiving screening and grit removal prior to discharge to treatment wetlands

• Effluent discharge pipeline to the Logan River downstream of the Cedar Grove weir

• Continuous discharge of effluent with ultra-low nutrient levels of less than 1 mg/L total nitrogen and 0.5 mg/L total phosphorus

• 150 kW photovoltaic solar array for on-site energy generation

• Revegetation of 1km of riparian corridor along the Logan River.

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This application is for Stage 1 of the Cedar Grove WWTP. Further stages are expected from 2028, which will be the subject of additional development applications.

Assessment outcomes Consistent with the vision for future greenfield growth under the Draft South East Queensland Regional Plan, the assessment outlined in this report identifies the Cedar Grove WWTP as critical to ensuring that anticipated growth within the Greater Flagstone PDA is serviced with appropriate wastewater treatment and disposal infrastructure.

Development activities and the intensification of land usage associated with the Cedar Grove WWTP are recognised as having the potential to impact on water quality in the Logan River and result in nuisance and/or harm to surrounding sensitive receptors, the environmental values and visual amenity of the area.

The material provided as part of this application has demonstrated that these risks will be adequately managed through a combination of siting, building design, landscaping and mitigation measures.

Recommendations Based on the assessment provided within this report, it is recommended that the Minister for Economic Development Queensland (MEDQ) favourably considers the proposed development and approves the application, subject to relevant and reasonable conditions.

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1. INTRODUCTION

The Logan Water Infrastructure Alliance (LoganWIA, the applicant) seeks a Priority Development Area (PDA) Development Permit for a Material Change of Use (MCU) for ‘utility infrastructure’ related to the construction of the regional Cedar Grove wastewater treatment plant (WWTP).

The Cedar Grove WWTP development, as utility infrastructure, is assessable development (permissible) under the Greater Flagstone PDA Development Scheme (the Development Scheme). The Development Scheme identifies that a PDA development application is required to be lodged with Economic Development Queensland (EDQ) for assessment and decision. Section 3 of the Development Scheme prescribes the PDA- wide criteria, zone intents and EDQ guidelines required to be taken into account in the preparation of a development application for assessable development.

LoganWIA has prepared this Planning Assessment Report on behalf of the Logan City Council (Council). This report supports an application for development over land located at Cedar Grove Road, Dennis Road and Rogers Road in Cedar Grove, Logan City. The proposed works include the establishment of a regional WWTP and associated ancillary infrastructure, including an access road, a discharge main and construction of artificial wetlands. A copy of the proposed plan is provided in Appendix A.

This report provides a planning assessment of the proposed development in relation to these PDA requirements and addresses the following particulars:

• Application details

• Site details and surrounding land use

• The proposal - details of the Cedar Grove WWTP

• Planning framework and assessment - an overview of the relevant planning framework (local and State) and an assessment of the compliance of the Cedar Grove WWTP proposal with the described planning controls.

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2. APPLICATION DETAILS

Applicant details The applicant for the development application is Logan City Council. The contact details for this application are as follows:

Our reference: LS-009 Contact person: Catriona Sutcliffe Postal address: PO Box 1183, Beenleigh, QLD 4207 Email: [email protected] Mobile: 0434 569 948 Fax: (07) 3412 9649

Site details The PDA development application seeks development approval for a WWTP on land located in Cedar Grove. Table 2-1 provides a summary of the lots within the Greater Flagstone PDA on which the Cedar Grove WWTP will occur. In addition to the land described in Table 2-1, properties located outside of the PDA should also be considered in assessing this application. Works within these properties are integral for the development of a WWTP on land within the PDA. These properties are listed in Table 2.2.

Copies of the current title searches are provided as Attachment 2 to the application.

Table 2-1: Site details – land within PDA

Land Lot on Plan Address Lot Size Land Owner Tenure

Lot 1 on RP25779 Dennis Road, Cedar Grove 38.39 ha Freehold Logan City Council

Lot 2 on RP25779 Dennis Road, Cedar Grove 40.34 ha Freehold Logan City Council

Lot 3 on RP25779 Rogers Road, Cedar Grove 25.49 ha Freehold Logan City Council

Lot 4 on RP25779 Rogers Road, Cedar Grove 25.34 ha Freehold Logan City Council

441-489 Cedar Grove Road, Lot 5 on RP25779 31.43 ha Freehold Logan City Council Cedar Grove

Lot 66 on W3123 Dennis Road, Cedar Grove 42.89 ha Freehold Logan City Council

N/A Dennis Road, Cedar Grove N/A road reserve State land DNRM

N/A Rogers Road, Cedar Grove N/A road reserve State land DNRM

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Table 2-2: Site details – land outside PDA

Lot on Plan Address Lot Size Land Tenure Land Owner

Queensland Bulk 104 Couldery Court, Water Supply Lot 200 on RP200030 9.458 ha Freehold Cedar Grove Authority (trading as Seqwater)

Unallocated State N/A Logan River N/A river DNRM Land

Type of development application The Greater Flagstone PDA Development Scheme (the Development Scheme) is the current applicable document for planning assessment of this application.

The applicant seeks a Development Permit for a Material Change of Use for ‘utility infrastructure’ (WWTP). The proposal for a utility infrastructure is Assessable Development (Permissible) under the Development Scheme.

An assessment of the proposed development and its level of assessment under the Development Scheme is provided in Section 6.3.

Assessment manager The Cedar Grove WWTP site is located within the Greater Flagstone PDA. Under Section 13 of the Economic Development Act 2012 (ED Act), the Minister for Economic Development Queensland (MEDQ) is the Assessment Manager and has responsibility for the assessment of and making a decision on the PDA development application.

Referral agencies There are no referral agencies for the development application.

Application fees The application fee payable to EDQ will be $18,600.00, being the prescribed material change of use fee for ‘major operational work (including trunk infrastructure)’1, plus any additional fees for specialist consultants or third party reviewers.

Payment of the application fee was completed as part of the lodgement of this development application.

Supporting documentation Supporting documentation to this report includes:

• Plans illustrating the proposed site layout and existing site conditions (Appendix A)

• Ecological Assessment (Appendix B)

1 Under the Development Assessment Fees and Charges Schedule (effective from 1 January, 2017)

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• Aboriginal cultural heritage search (Appendix C)

• Environmental Management Register and Contaminated Land Register searches (Appendix D)

• Infrastructure Services Report (Appendix E)

• Landscape Concept Plan (Appendix F)

• Odour Assessment (Appendix G)

• Noise Assessment (Appendix H)

• Site Based Management Plan (SBMP) (Appendix I)

• Water quality modelling (Appendix J)

• Pre-application correspondence from EDQ (Appendix K)

• Assessment against the relevant PDA-wide criteria (Section 6.3.4; Appendix L) and zone intents (Section 6.3.5) of the Development Scheme.

Further information has been provided as an attachment to the development application:

• EDQ and IDAS forms

• Title searches (Attachment 2)

• Owners’ consent from Logan City Council, Department of Natural Resources and Mines and Seqwater (Attachment 3)

• Easement documents (Attachment 4).

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3. THE SITE

Location and characteristics The Cedar Grove WWTP site is located beside the Logan River. The northern and western boundaries of the site meet with the Logan River. The southern boundary is delineated by Cedar Grove Road and the eastern boundary is Dennis Road. Cedar Grove is located in Logan City and Logan City Council has jurisdiction over the site.

The Cedar Grove WWTP site has a total area of approximately 203.9 hectares (ha), and comprises six land parcels within the PDA and one land parcel within the jurisdiction of Logan City Council (refer to Table 2-1 and 2-2 in the previous section).

The site is undulating and generally increases in height to a raised section in the centre of the site. Historically, the site has been grazed and a small herd of cattle is still present on the site. The site has been largely cleared with the only remaining natural vegetation alongside the Logan River. A few natural gullies and man-made drainage lines are present across the site, as well as low lying depressions in the topography that become waterlogged during wet periods. There is also an abandoned dwelling and shed located in the western area of the site (specifically on Lot 4 on RP25779).

Vehicular access to the site is via Cedar Grove Road. There is no vehicular access from Dennis Road.

The site location is presented in Figure 3-1.

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Figure 3-1: Site location

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Land tenure

3.2.1 Parts of the WWTP within the PDA All lots comprising the Cedar Grove WWTP site (within the PDA) have freehold land tenure and are owned by Council.

Pipelines necessary to support the operation of the WWTP are proposed along Rogers Road and Dennis Road. The road reserves are State Land and owner’s consent is required from the Department of Natural Resources and Mines (DNRM) for development within the road.

Owner’s consent for the PDA development application is required under Section 82 of the ED Act. Owner’s consent from Council and DNRM is provided in Attachment 3 of this development application.

3.2.2 Parts of the WWTP outside of the PDA A pipeline for discharge purposes is proposed from the Cedar Grove WWTP infrastructure, terminating at the Logan River, and will traverse Lot 200 on RP200030 adjacent to the east of the site. Lot 200 on RP200030 is owned by Queensland Bulk Water Supply Authority (trading as Seqwater), while the Logan River is unallocated state land (USL). Both properties are located outside of the PDA and, from a planning assessment perspective, the provisions of the Development Scheme do not apply to the development. It will be the responsibility of the applicant to ensure approvals requirements under other legislation (for example, the Sustainable Planning Act 2009) are addressed.

Early discussions with Seqwater have been undertaken regarding the negotiation of an agreement for an easement (right of way) under the Land Act 1994, however, details of this easement are not required for this PDA development application. Owner’s consent from Seqwater and DNRM is provided in Attachment 3.

Land Use The primary land use of the Cedar Grove WWTP site is ‘cattle breeding and fattening’, with a small herd of cattle still present on the site. The secondary land use is described as ‘local authority use’ (PriceFinder, 2016). Lot 200 on RP200030 supports infrastructure associated with the operation of the Cedar Grove Weir.

Surrounding land use The Cedar Grove WWTP site is bound to the north by the Logan River and is located upstream from the Cedar Grove weir. The immediate area adjacent to the Logan River, north-east of the Cedar Grove WWTP site (i.e. Lot 3 on SP201569), is planned to be developed by Seqwater as a water treatment plant extracting water from upstream of the Cedar Grove weir. This area is located within the Greater Flagstone PDA.

Two small reserve areas owned by Seqwater border the Cedar Grove WWTP site and the Logan River, but do not form part of the application. The first (Lot 235 on W3123) adjoins the north-east boundary of the Cedar Grove WWTP site. The second (Lot 155 on WD3050) is at the end of Rodgers Road, towards the Logan River. Both lots are reserved for ‘water and crossing’ purposes.

Several parcels of land to the south-east of the Cedar Grove WWTP site are zoned as ‘rural residential’ under the Logan Planning Scheme. The nearest dwelling on these lots to the Cedar Grove WWTP site is located approximately 20m from the site’s boundary (refer Section 4.1.1 – Sensitive receptors). This pocket of rural

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residential land is separated from the boundary of the Cedar Grove WWTP site by Dennis Road. An area zoned ‘environmental management and conservation’ is located to the north of this rural residential housing.

Similar to the Cedar Grove WWTP site, land immediately to the west (i.e. Lot 6 on RP25779) is cleared and is used for cattle breeding and fattening purposes. A number of buildings associated with the dwelling are centrally located on this lot. Under the Logan Planning Scheme, the land is zoned for ‘rural’ use. Land located immediately to the south of the proposed WWTP site (adjacent to Cedar Grove Road), is also zoned for rural use and is currently used for dairy farming and cattle breeding.

An overview of the zoning of the proposed Cedar Grove WWTP site and surrounding area, as indicated in the Logan Planning Scheme, is shown in Figure 3-2.

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Zoning under Logan Planning Scheme

Figure 3-2: Zoning of site and surrounding area under the Logan Planning Scheme

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Easements and rights of use There are multiple easements on the site (refer to Table 3-1 and Figure 3-3). Although the proposed Cedar Grove WWTP does not include any works over these easements and is consistent with the terms of these easements, LoganWIA is in the process of obtaining consent from Seqwater (for all easements) for carrying out works near Seqwater infrastructure, in accordance with Seqwater Network Consent Guidelines.

Information regarding these easements (obtained from the Queensland Land Registry) is included in Attachment 4 of this development application.

Table 3-1: Existing easement information for the Cedar Grove WWTP site

Easement Easement Lot on Plan document Easement Grantee Easement Purpose

Lot 1 on RP25779 AM/SP209577 712417882 Queensland Water Lot 2 on RP25779 AN/SP209577 712417884 Infrastructure Pty Ltd. All of these easement Lot 3 on RP25779 AR/SP209579 712417927 assets were transferred to Queensland Bulk Water storage/ water Lot 4 on RP25779 AS/SP209579 712417932 Water Supply Authority infrastructure (trading as Seqwater) Lot 5 on RP25779 AT/SP209579 712417947 during 2009 under vesting document AK/SP209577 and 712417874 Lot 66 on W3123 712573682 AL/SP209577

A Right of Use (RoU) exists within the site over part of Lot 5 on RP24779 between Council and the Queensland Rocketry Society for the period between 1 January 2017 and 31 December 2017. The RoU allows the Queensland Rocketry Society to carry out ‘rocket launch activities’ every second Sunday of each month, and any special events (with prior written Council approval) between 6am and 5pm. The terms and conditions of the ROU allow Council to access the property to conduct pre-construction activities (clause 7), or cancel the approval (clause 15) for reasons including ‘implementation of Council’s essential water infrastructure strategy for the facility’ (clause 15.1.2).

Council will remain as the contact for this RoU and the appropriate Council branch will be contacted in regards to pre-construction activities occurring at the site (which may affect the use and/or terms of the RoU).

Access and servicing Vehicular access to the Cedar Grove WWTP site is via Cedar Grove Road. There is no vehicular access from Dennis Road. Rogers Road traverses the Cedar Grove WWTP site. It is an unsealed road and is closed off from public use.

The Cedar Grove WWTP site is not currently serviced by power, water or electricity.

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Figure 3-3: Proposed WWTP infrastructure in relation to easements

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4. ENVIRONMENTAL ASSESSMENT

Environmental values

4.1.1 Sensitive receptors The location of the nearest sensitive receptors to the proposed Cedar Grove WWTP are shown in Figure 4-1. Table 4-1 provides distances between these receptors and the WWTP infrastructure and property boundary.

Table 4-1: Sensitive receptors

Reference (Figure 4-1Error! Distance (to site Distance (to WWTP Address Reference source boundary) (m) boundary) (m) not found.)

1 343 & 344 Cedar Grove Road 110 810

2 316 Cedar Grove Road 210 910

3 333 Cedar Grove Road 30 810

4 Fig Tree Court 50 870

5 514 Cedar Grove Road 320 1,030

6 491 Cedar Grove Road 360 1,000

7 End of Gittins Road 460 1,460

8 Couldery Court 330 1,040

9 Un named road off Bushman Road 540 1,170

Sensitive environmental receptors in proximity to the site include:

• The Logan River, bordering the site immediately to the north

• An area zoned under the Logan Planning Scheme for ‘environmental management and conservation’ purposes (Lot 501 on WD6151) occurring approximately 20m to the east of the site boundary. This area links to land surrounding ‘Robert’s Waterhole’, a small tributary connecting to the Logan River.

The closest school to the Cedar Grove WWTP site is Woodhill State School, located approximately 4.4km to the south. An evaluation of the potential impact of the WWTP on the sensitive receptors described above is detailed in Appendix L as part of the ‘Assessment of the Cedar Grove WWTP against the PDA-wide criteria’.

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Figure 4-1: Sensitive receptors in proximity to the site Source: (Cardno, 2016a)

Significant urban development is projected to occur within the Greater Flagstone PDA and multiple development applications have been approved within this area. As of 15 December 2016, there were 36 decided development applications within the Greater Flagstone PDA with ‘approved’ status (DILGP, 2016a). An additional 30 current applications are under assessment with the following status: 14 ‘properly made’; four ‘notice of application’; 10 ‘information request’; and two ‘decision pending’ (DILGP, 2016b).

4.1.2 Soils The Australian Soil Atlas shows the site as containing two main soil categories. The west of site is comprised of soil containing boulders with some sandstones, shales, tuffs and trachyte. The chief soils are neutral and acid dark friable earths. The east of site is categorised as containing hard acidic yellow and red mottled soils containing large amounts of nodular ironstone material.

Soil investigations undertaken in 2016 indicate a silty clay or silty clay loam topsoil layer of between 0.3 and 0.6m deep, overlying intermediate to heavy clays.

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Acid Sulphate Soils (ASS) are generally encountered around water bodies, coastal regions and at elevations below 5m Australian Height Datum (AHD). The site elevation is well above 25m AHD and as such, the presence of actual or potential ASS within the site is not expected. No site specific investigations have been undertaken with respect to ASS.

4.1.3 Groundwater There are no registered groundwater bores within the site. The closest registered groundwater bore (RN 124270) is approximately 0.8 km to the south-west of the site.

4.1.4 Watercourses The site is located within the Logan River Catchment with the Logan River bordering the site to the north and north-west. The Logan River is a mapped watercourse under the Queensland Water Act 2000. Three ‘yet to be mapped’ watercourses also occur within the site. Runoff from the site drains to these three gullies or directly to the Logan River. Minimal external catchment area drains onto the site.

There is one surface water monitoring open gauging station located within the Logan River2. This station is within the Logan-Albert Basin and is located at the north-east of the site.

Under the Queensland Fisheries Act 1994, the Logan River is considered a major risk waterway. In addition, there are multiple mapped low risk waterways occurring within the site, specifically in: Lot 2 on RP25779, Lot 5 on RP25779 and Lot 66 on W3123.

4.1.5 Wetlands The Cedar Grove WWTP site does not contain, nor is it within close proximity to, a referable wetland as defined under the Environmental Protection Act 1994 (EP Act).

4.1.6 Coastal land The Cedar Grove WWTP site is not identified within a coastal management district, erosion prone area or storm tide inundation area as defined under the Coastal Protection and Management Act 1995.

4.1.7 Fisheries habitat The Cedar Grove WWTP site does not contain, nor is within close proximity to, any declared fish habitat areas identified under the Fisheries Act 1994.

4.1.8 Biodiversity areas The Logan Planning Scheme contains a number of mapping overlays relating to biodiversity:

• Under the ‘OM-02.00 Biodiversity areas overlay’ map, the Cedar Grove WWTP site is recognised as a ‘biodiversity area’

• Under the ‘OM-02.01 Vegetation management areas’ map, vegetation located along the Logan River on the Cedar Grove WWTP site is identified as a ‘primary vegetation management area’, while the remainder of the site is mapped as a ‘secondary vegetation management area’

2 Station No. 145014A, Name: Logan River at Yarrahappini

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• Under the ‘OM-02.02 Biodiversity corridors’ map, vegetation located along the Logan River on the Cedar Grove WWTP site is identified as being part of a wider connecting ‘biodiversity corridor’. The site is not identified as containing any ‘koala corridors’ or ‘environmental management and conservation areas’

• The Cedar Grove WWTP site is not identified as containing any vegetation types of local significance under the ‘OM-02.03 Locally significant vegetation types’ map

• Under the ‘OM-02.04 Matters of state and local significance’ map, the whole of the Cedar Grove WWTP site is identified as being a ‘matter of local environmental significance’. The Logan River and some of the small gullies and drainage lines are identified as ‘matters of state environmental significance’.

Figure 4-2 demonstrates the location of mapped biodiversity corridor areas in relation to the Cedar Grove WWTP site. The corridor located along the banks of the Logan River will be enhanced through the proposed restoration and rehabilitation of this vegetation. Restoration of this area will help to facilitate fauna movement throughout the area and provide better-quality habitat for native flora and fauna.

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Figure 4-2: Biodiversity area mapping

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4.1.9 Vegetation The Cedar Grove WWTP site has been historically cleared and used for grazing, with only scattered shade trees retained within the site and a narrow strip of riparian vegetation (approximately 35 m) retained along the Logan River. The complete details of the species of this vegetation is provided in the accompanying Ecological Assessment report (refer to Appendix B).

According to Regulated Vegetation Management Mapping, the site is mapped as containing non-remnant (Category X) vegetation pursuant to the Vegetation Management Act 1999 (VM Act). This vegetation runs adjacent to the Logan River. The complete results of this mapping is provided in the Ecological Assessment report (refer to Appendix B).

The Cedar Grove WWTP site is situated within freehold property designated as within the PDA. All freehold property within the Category X area is subject to an exemption under the Sustainable Planning Regulation 2009 (SP Reg 2009), Schedule 24, Part 2, Item 2 (d). As the works are within a PDA, an exemption under the SP Reg 2009, Schedule 24, Part 2, 2 (g) also applies. Therefore, no formal permits are required for the clearing of regulated vegetation.

Mapping illustrating the location of regional ecosystems and remnant vegetation in relation to the Cedar Grove WWTP site is shown in Figure 4-3.

In addition to the Logan River, a number of drainage features mapped under the VM Act traverse the site, extending from the Logan River in the north east and west of the site. An assessment of the potential impact of the Cedar Grove WWTP on the ecological health and values of the Logan River and associated waterways is undertaken in Section 5.5.12 (Water quality) and Criteria 3.3.8 (Natural and cultural values) within the ‘Assessment of the Cedar Grove WWTP against the PDA-wide criteria’ (Appendix L).

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Figure 4-3: Regional ecosystem and remnant vegetation mapping

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4.1.10 Threatened species and species habitat The protected matters search tool identified a number of threatened flora and fauna species listed under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) as potentially occurring within 5 km of the proposed development area. A site walkover undertaken on the 17 November 2016 did not identify the presence of ore likely habitat for any threatened species or communities (refer to Appendix B).

The Cedar Grove WWTP site supports a number of hollow-bearing trees occurring within the cleared area of the site. The highest quality area of habitat was observed within the narrow strip of vegetation along the banks of the Logan River. These areas may provide habitat for transient fauna moving through the area and breeding habitat for fauna species such as brush-tail possums and noisy miners which are able to persist in disturbed environments.

Given that the proposed construction footprint is located within an existing disturbed and modified area with few observed habitat features, and that no threatened flora or fauna species are known to occur on the site or were recorded within the site during the site inspection, it is considered unlikely that the Cedar Grove WWTP will have a significant impact on any Matters of National Environmental Significance (MNES). Further, vegetation along the banks of the Logan River is proposed to be enhanced as part of the proposed development. Restoration of this area will help to facilitate fauna movement throughout the area and provide better quality habitat for native flora and fauna.

Refer to the Ecological Assessment in Appendix B for further details.

4.1.11 Protected flora and fauna species In Queensland, endangered, vulnerable and near threatened (EVNT) flora and fauna species are protected by the Nature Conservation Act 1994 (NC Act).

Under the NC Act, the Cedar Grove WWTP site is not mapped as a High Risk area (refer Appendix B). No threatened flora or fauna species were observed during the site inspection undertaken by a LoganWIA Environmental Scientist on the 17 November 2016. Due to the existing highly disturbed nature of the site, it is considered unlikely that the site supports habitat sufficient to sustain populations of EVNT species. As such, an approval under the NC Act is unlikely to be required for the proposed works.

4.1.12 Animal breeding places The Cedar Grove WWTP site was noted to support a number of potential animal breeding places, including large stags, during an inspection undertaken by a qualified Environmental Scientist on the 17 November 2016 (refer to Appendix B). Notably, a large hollow-bearing Eucalyptus tereticornis (DBH 222cm) was observed at the coordinates of -27.845051; 153.960819. This tree was noted to contain numerous hollows and was providing nesting habitat for parrots at the time of the survey. This tree does not occur in an area which will be affected by the proposed works.

In general, habitat features within the Cedar Grove WWTP site were observed along the banks of the Logan River. Macrophytes were noted as being established within the gully/drainage lines and depressions.

As the standing dead trees noted within the site provide potential animal breeding places, the locations of these features will need to be recorded and the project will require the implementation of a generic Species

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Management Program (SMP), as specified in the NC Act. The SMP is to cover all Least Concern fauna species which may use the area for breeding purposes.

4.1.13 Koala habitat Koala habitat mapping shows that the Cedar Grove WWTP site is not within either a ‘Priority Koala Assessable Development Area’ or ‘Koala Assessable Development Area’ as identified under the South East Queensland Koala Conservation State Planning Regulatory Provisions (SPRP). The site is mapped as Low Value Rehabilitation on the Koala Habitat SEQ mapping. As the site is not within a ‘Priority Koala Assessable development area’, no further requirements apply.

Complete search results are provided in the Ecological Assessment provided in Appendix B.

4.1.14 Cultural heritage A search of the Australian Heritage Database, Queensland Heritage Database and mapping under the Logan Planning Scheme did not identify any area of cultural heritage significance on or within the immediate vicinity of the site.

A search of the Department of Aboriginal and Torres Strait Islander Partnerships (DATSIP) cultural heritage database and register was undertaken on 5 October 2016. This search returned no site points, polygons, Cultural Heritage Management Plans (CHMP), Designated Landscape Areas (DLA) or study areas for the site.

Cultural Heritage search results are presented in Appendix C.

Clearing of the site occurred prior to 1954 (QAP1649036) and was maintained through to 1974 (QAP2655118). Further clearing works occurred during 1997 (QAP5553124). Works for the development are defined as Category 4 or Category 5 under the Cultural Heritage Duty of Care Guidelines. Category 4 works are defined as works in areas previously subject to significant ground disturbance. Category 5 works are defined as activities that cause additional surface disturbance.

4.1.15 Native Title notification Native Title is generally considered to be extinguished within freehold land. As the Cedar Grove WWTP site is owned by Council and has freehold tenure, Native Title notification is not required for the site itself.

Native Title notification will be required over lots which are state land (road reserve, Logan River). This process will be undertaken in parallel to the lodgment and assessment of this PDA development application.

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Land-based risks

4.2.1 Bushfire According to the Bushfire Hazard Potential Overlay (OM 03.01) of the Logan Planning Scheme, vegetation located along the Logan River (within the site) is defined as a bushfire hazard with ‘medium potential’. The proposed footprint area of the Cedar Grove WWTP does not intersect with this mapped bushfire hazard area.

Figure 4-4 illustrates the Cedar Grove WWTP site in relation to the identified areas of bushfire hazard potential.

4.2.2 Flooding According to the Flood Hazard Overlay (OM-05.00) of the Logan Planning Scheme, more than half (50%) of the Cedar Grove WWTP site is within a flood hazard area, which is defined as an area inundated during a 100- year Average Recurrence Interval (ARI) event.

The location of the Cedar Grove WWTP site in relation to the Q100 ARI flood inundation level is shown in Figure 4-5.

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Figure 4-4: Bushfire hazard potential

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Figure 4-5: Cedar Grove WWTP site in relation to the Q100 flood inundation level

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4.2.3 Steep slopes The Logan Planning Scheme contains mapping that illustrates if a site is affected by steep or unstable land (OM-08.01). Isolated sections of the Cedar Grove WWTP site are located within areas mapped as containing landslide hazards or steep slopes (equal to or greater than 15 per cent slope hazard area). These areas occur towards the border with the Logan River and reflect the natural gullies and man-made drainage lines occurring on the site.

4.2.4 Acid sulphate soils Acid Sulphate Soils (ASS) are generally encountered around water bodies, coastal regions and at elevations below 5 m Australian Height Datum (AHD). The contours of the site are at 25 - 49m AHD. The presence of ASS within the Cedar Grove WWTP site is therefore unlikely.

4.2.5 Contaminated land A search of the Environmental Management Register (EMR) and Contaminated Land Register (CLR) was undertaken on 1 December 2016. Refer to Appendix D for copies of register records. No lots within the site are listed on either register.

4.2.6 Fire ants The suburb of Cedar Grove (including the site) is listed as occurring within a Fire Ant Biosecurity Zone 2. This zone restricts movement of items within and outside of zone.

4.2.7 Unexploded ordnance A search of the Australian Government Department of Defence website for potential or known unexploded ordnance (UXO) has been undertaken. No potential or known UXO items have been identified within the site. UXO items have been recorded within 500m of the Cedar Grove suburb.

4.2.8 Invasive and pest species Several weed species were identified during the site investigation carried out on the 17 November 2016 (refer to Appendix B). These included: declared weeds under the Biosecurity Act 2014, such as Lantana (Lantana camara), Cats Claw Creeper (Dolichandra unguis-cati), and Fireweed (Senecio madagascariensis); and environmental weeds, including Water Hyacinth (Eichhornia crassipes) and Wild Cotton (Gomphocarpus fruticosus).

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5. THE PROPOSAL

Project need The Greater Flagstone and Yarrabilba PDAs (which are part of the Logan South region) are key greenfield development areas in South East Queensland (SEQ). The population of these areas is forecast to increase from a current level of around 2,000 people to an ultimate population of more than 200,000 people. Significant investment in wastewater infrastructure is required to facilitate this development.

The Logan South Wastewater Servicing Strategy (Cardno, 2016b) identified that the preferred strategy to service the Greater Flagstone PDA involves the construction of a permanent WWTP on a 203.9 ha site owned by Council at Cedar Grove (refer to Appendix A for a plan of the proposed site layout). The development of a WWTP at Cedar Grove was one of the wastewater service strategies considered as part of this study. Other considered alternatives included:

• A decentralised treatment strategy comprising a number of separate WWTPs constructed by developers at each development site

• Centralised WWTPs at South Maclean and Yarrabilba

• Transferring or all or part of sewage loads to the existing WWTP to Loganholme WWTP for treatment.

It is noted that a ‘no development’ option (i.e. not providing wastewater treatment infrastructure) was not considered as an alternative in this study, as growth areas in SEQ have been identified by the State government and development of these areas is facilitated by the gazettal of PDAs. As the City’s water service provider, it is necessary that Council provide appropriate infrastructure to allow development to progress in accordance with demand for housing. The provision of wastewater infrastructure is a key prerequisite to the development and sale of affordable housing, which being located on smaller land parcels, will not have the capacity for on-site sewage disposal. The development of a centralised WWTP at Cedar Grove has therefore been confirmed as the preferred option, with planning progressing towards a commissioning date of mid-2019. A number of alternative treatment processes and effluent management strategies were considered prior to selection of the preferred options to take forward for design and approval. Details of LoganWIA’s analysis of treatment process and effluent strategy options are provided in the Cedar Grove Wastewater Treatment Plant: Stage 1 Effluent Management Strategy (LoganWIA 2016).

Staging The stages in which the Cedar Grove WWTP will be constructed and augmented will be dictated by actual growth rates in the PDA, however, the anticipated strategy involves constructing the works nominally over four separate stages as follows:

• Stage 1: 2019 to 2028

- designed to service a population of 20,000 EP at an ADWF of 3.3 ML/day (based on ADWF 165 L/EP/day)

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• Stage 2: 2028 to 2039

- additional capacity of 30,000 EP and based on current population projections, to be brought online in 2028

• Stage 3: 2039 to 2049

- additional capacity of 37,500 EP to be brought online in 2039

• Stage 4: 2049 to 2068

- additional capacity of 37,500 EP, bringing the ultimate capacity of the plant to 125,000 EP in 2068.

The staged development of the Cedar Grove WWTP will allow the project to reach its ultimate projected capacity of 125,000 EP over approximately 50 years. This MCU development application is relevant to Stage 1 only. A graphical summary of the anticipated staging strategy of the Cedar Grove WWTP is shown in Figure 5-1.

Figure 5-1: Anticipated staging strategy of the Cedar Grove WWTP

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Concept design

5.3.1 The WWTP The Cedar Grove WWTP utilise a Membrane Bioreactor (MBR). A process diagram of the MBR is illustrated in Figure 5-2 and the following elements are proposed: • Inlet works, including fine screening and grit removal

• A two basin bioreactor with an integrated four membrane train MBR system capable of processing instantaneous flows up to 5 x ADWF

• A chemical storage and dosing facility for flocculants, sodium hypochlorite, caustic and citric acid

• Bioreactor and membrane aeration blowers inside a blower building

• An aerated sludge storage tank for pre-thickened waste activated sludge (WAS) from the bioreactors

• A biosolids dewatering facility comprising high performance dewatering equipment, polymer batching and dosing system in a sludge dewatering building.

• A dewatered biosolids temporary storage and load-out facility

• A control building

• An odour control system to remove and treat odour from the inlet works structure and an influent flow splitter at the head of the bioreactors

• A generator unit to supply backup power to the plant

• A compressed air system to supply the pneumatic actuated valves and any other pneumatic items.

Figure 5-2: Conceptual overview of Membrane Bioreactor process

Treated effluent specifications for the Cedar Grove WWTP are detailed in Table 5-1.

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Table 5-1: Release quality characteristics – at outlet to WWTP

Long term Long term Weekly Quality Characteristic Median1 50th 90th Frequency Min percentile2 percentile2

BOD5 (mg/L) 10 30 Every 2 weeks

Suspended Solids (mg/L) 10 30 Every 2 weeks

Ammonia (mg/L) 1 3 Every 2 weeks

Total Nitrogen (mg/L) 3 9 Every 2 weeks

Total Phosphorous (mg/L) 1 3 Every 2 weeks

pH (pH units) 6.5 8.5 Every 2 weeks

Dissolved Oxygen (mg/L) 2.0 Every 2 weeks

Faecal Coliforms (cfu/100mL) 150 600 Every 2 weeks

Enterococci (cfu/100mL) 35 Every 2 weeks

1Median means median of 5 consecutive samples taken over 28 hours 2Long term percentile calculated over a rolling one-year period

5.3.2 Wetland A constructed surface flow wetland is proposed for the site to provide additional treatment and, in particular, nutrient removal from the effluent. The wetlands will total 10.2 ha in area, constructed over three stages of two cells, with each cell being 1.7 ha, as shown in Appendix A. Based on existing growth projections, cells will be constructed in 2019, 2022 and 2025 and will be planted with a range of suitable wetland species.

All flows treated through the MBR will be discharged to the constructed wetland system. This system will also be designed to accommodate peak wet weather flows of up to 6.5 x ADWF, which is equivalent to PWWF.

The design effluent quality for the wetland is detailed in Table 5-2. These parameters will be measured at the outlet from the wetlands prior to discharge into the Logan River.

Table 5-2: Release quality characteristics – at Logan River outfall

Long term Annual Mass Quality Characteristic Max Frequency 50th Load23 il 1 Total Nitrogen mg/L 1 Every 2 weeks

Total Nitrogen (kg/year) 1323.0 Annual calculation

Total Phosphorous (mg/L) 0.5 Every 2 weeks

Total Phosphorous (kg/year) 662.5 Annual Calculation Every 2 weeks if chlorination is Free Chlorine (mg/L) 0.5 proposed 1Long term 50th percentile means the median value of the measured values over a rolling one-year period 2Annual Dry Weather Mass Load Limit (kg) = Design Average Flow (ML per day) x 365 x long term median (50th percentile) concentration (mg/L). NB Design Average Flow = 1.1 x Average Dry Weather Flow

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Land requirements Within the 203.9 ha site, an area of 10.7 ha has been identified as the footprint for the ultimate Cedar Grove WWTP. The Stage 1 WWTP infrastructure will be located within this footprint. A further 10 ha is required for construction of wetlands for Stage 1. In addition to these two major elements to the WWTP, there will be additional infrastructure in the form of transfer pipelines and an access road. The key elements of the concept design are presented in the preliminary concept site layout plan (refer to Appendix A).

The discharge main, which will transfer treated effluent from the wetlands to the Logan River, is required to be located downstream of the Cedar Grove weir to alleviate any potential impacts associated with a planned water treatment plant offtake upstream of the weir. This necessitates the construction of a pipeline from the Cedar Grove WWTP site, across Dennis Road, Lot 200 on RP200030, and unallocated state land adjacent to the Logan River.

Operational considerations

5.5.1 Activities and location The preliminary concept site layout is presented as Appendix A. The location of the WWTP within the Cedar Grove site has been selected following an analysis of suitable locations and was selected based on the following considerations:

• Maintaining all key infrastructure above the Q100 flood level

• Minimising earthworks by utilising flat areas of the site

• The ability to pump sewage to an inlet works at a high point with process elements situated at lower elevations to take advantage of gravity for conveyance

• Maximising buffer distances to sensitive receptors.

5.5.2 Hours of operation Once constructed, the Cedar Grove WWTP will operate 24 hours a day, seven days a week.

5.5.3 Traffic and access The WWTP site is relatively close to the Mt Lindesay Highway. From the Mt Lindesay Highway, access to and from the site is expected to be via Cedar Grove Road for vehicles travelling south, and Undullah Road and Cedar Pocket Road for vehicles travelling north. The current configuration of the road network is such that it is not anticipated that site traffic will access the site using other roads.

At the Stage 1 full operational capacity, vehicle movements will be required for two-way trips to and from the WWTP for chemical delivery, waste removal and operations and maintenance purposes. An overview of the estimated number of two-way trips for general operations and maintenance associated with the Cedar Grove WWTP is shown in Table 5-3.

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Table 5-3: Two-way trips

Vehicle Movements Vehicle Type (two-way trips/week) Chemical delivery 1 Solid waste removal 1 Sludge removal 10 Operation and maintenance light vehicles 10

Internal access to the WWTP will be provided via a new road constructed off Cedar Grove Road, situated above the flood hazard trigger level. Based on the provided traffic generation estimates, it is not expected that upgrades to the public roads will be required for Stage 1 of the WWTP.

Further detail regarding traffic generation estimates and access infrastructure requirements to support the Cedar Grove WWTP is provided in the Infrastructure Services Report attached as Appendix E.

5.5.4 Infrastructure servicing The Infrastructure Services Report attached as Appendix E includes details of the power, water and telecommunications services to the site.

Potable water will be provided from the existing 200 mm main located along Cedar Grove Road.

Power will be provided from the existing 22 kV feeder main which crosses the site, with the addition of a 3 MWA pad mounted transformer constructed on the site. A solar array of 150 kW of photovoltaic power generation is proposed on the site, with connection to the grid during surplus power generation.

The site is within Telstra 4GX mobile coverage and is programmed to be connected to the National Broadband Network in 2020. 4GX will be used to provide telecommunications to the site including telemetry controls, until fibre broadband is available.

It is not proposed to connect the site to municipal stormwater infrastructure. Stormwater infrastructure within the developed area of the site will consist of collection drains and appropriate treatment to ensure contaminants are removed prior to discharge to the Logan River. There will be no increase in the stormwater runoff generated on the undeveloped areas of the site. Clean stormwater is to be diverted around the site and discharged to the Logan River.

5.5.5 Landscaping The overall landscape character of the Cedar Grove WWTP site and its immediate environs is a rural setting. The landform comprises predominantly cleared, grass fields with long distance views to Flinders Peak possible from Cedar Grove Road and Dennis Road. From Cedar Grove Road, vegetation lining the Logan River can also be seen along the horizon line.

The visual impact of the Cedar Grove WWTP on the surrounding area is anticipated to be small, as the WWTP and associated wetlands will be screened by buffer vegetation. The infrastructure components of the WWTP will be low-set (single-story), with the exception of a 6 m stack associated with the inlet works. The stack is likely to have an impact on the current uninterrupted view of Flinders Peak from Dennis Road. Proposed

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mitigation measures, including a significant setback from the property boundary and vegetation buffering, will help to soften the impact of this stack on the amenity and landscape values of the surrounding rural area.

A Landscape Concept Plan is attached as Appendix F. The plan shows the proposed location of buffer planting for the purposes of screening of infrastructure elements on site and potential natural rehabilitation areas along the riparian corridor of the Logan River.

In line with Council’s expectations for environmental improvements at the site, it is envisaged that landscape concepts, including rehabilitation, will be further developed (in consultation with Council and EDQ) during detailed design.

5.5.6 Odour management An assessment of potential odour impacts associated with Stage 1 of the Cedar Grove WWTP has been undertaken by WSP | Parsons Brinckerhoff (refer to Appendix G).

This assessment found that no sensitive receivers will be affected by odour impacts during the operation of Stage 1. This assessment takes into account the provision of an odour control facility to manage emissions from the inlet works.

The odour assessment also considered nuisance odour effects from the ultimate WWTP sizing, and again found that no sensitive receivers will be affected by odour impacts during the operation of the Cedar Grove WWTP. This assessment was based on the assumption that subsequent stages will consist of similar technology to Stage 1. In reality, it is anticipated that technological improvements over the timeframe of the ultimate WWTP development will lead to fewer odour emissions than current best available technology.

5.5.7 Noise management A noise assessment has been undertaken by LoganWIA based on the preliminary concept design elements of the Cedar Grove WWTP (refer to Appendix H). In the absence of specific acoustic criteria provided by the Development Scheme, unattended noise monitoring was conducted to determine the applicable noise limits in accordance with Schedule 6 – Planning Scheme Policy 3 (Environmental Management) of the Logan Planning Scheme.

This assessment found that existing ambient noise levels surrounding the site are subjectively very quiet. Despite this, all noise sources operating simultaneously at the Cedar Grove WWTP are predicted to comply with adopted Council criteria at all nearby sensitive receivers (Cardno, 2016a). No specific noise mitigation measures beyond standard practice have been proposed to control the effects of noise for Stage 1 of the WWTP. A description of the potential management of noise impacts, although unlikely to be of nuisance, is provided in the SBMP (Appendix I).

5.5.8 Flora and fauna management An Ecological Assessment (Appendix B) report recommended that during construction and operation of the WWTP: • Disturbance to habitat trees should be avoided if possible • A spotter catcher should be present for any vegetation clearing works • Weed control should be incorporated into the site based management plan • All construction should be undertaken in accordance with an erosion and sediment control plan.

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These measures will be incorporated into a Construction Environmental Management Plan (CEMP).

5.5.9 Waste management The Cedar Grove WWTP site will include a sludge dewatering facility and temporary storage. Sludge will be dewatered on site then removed for disposal or reuse off site.

The Cedar Grove WWTP will ensure compliance with the conditions for waste management contained in the environmental authority approval, to be authorised in association with the concurrent development application (MCU) for sewerage treatment activities (ERA 63).

A description of the potential management of waste impacts is provided in the SBMP (Appendix I).

5.5.10 Flooding and stormwater All operational areas of the site are located above the Q100 flood inundation level, with the exception of conveyance infrastructure.

The Cedar Grove WWTP will ensure compliance with the conditions for stormwater and water quality management contained in the granted development approval and environmental authority.

A description of the potential management of water quality impacts is provided in Section 4.2 of the SBMP (Appendix I).

5.5.11 Water quality To understand the impact of the discharge on the Logan River, predicted impacts of the Cedar Grove WWTP discharge were modelled using catchment and receiving environment models developed by Healthy Waterways and Catchments (HWC). The development of these models underwent an extensive peer review process by HWC’s Scientific Expert Panel and the models have previously been used in other water quality assessments on behalf of HWC. Full details of the model, methodology and results are presented in Appendix J. The model comprises:

• A catchment model, which predicts total suspended sediment (TSS), total nitrogen (TN) and total phosphorus (TP) inputs to the catchment arising from all land uses, taking into account the changes arising from land development within the PDA

• A receiving environment model which is a combination of hydrodynamic and water quality models.

Using this model, the changes in nutrient loads and concentrations within the water column were predicted and the impacts associated with inputs from the Cedar Grove WWTP were isolated.

The model is calibrated against DNRM stream flow data and the DEHP Ecosystem Health Monitoring Program (EHMP) water quality data. The model does not extend upstream to the Cedar Grove WWTP site and, as such, a boundary limitation has been applied with impacts assessed at the upstream extent of the model, which is the head of the Logan River estuary. The model therefore focuses on far-field impacts on the Logan River estuary.

The model identified that the operation of the Cedar Grove WWTP will result in an increase in TN of 0.72%, an increase in TP of 7.46% and a decrease in TSS of 1.09% in 2027 in the Logan river at the upstream tidal limit.

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Further data collection is underway with a view to updating and calibrating the model to extend upstream as far as the Cedar Grove Weir. The calibration and use of this model will allow more detailed predictions of water quality impacts and will address the model limitations in future analyses.

5.5.12 Operational management The environmental management of the site will be defined within a SBMP. The SBMP will:

• Set the environmental objectives or standards to be achieved

• Identify the potential environmental harm that may occur from the operation of the ERA

• Establish and document control measures to prevent this harm as far as practicable

• Define roles and responsibilities

• Ensure record keeping and reporting procedures are aligned with statutory and internal Council requirements

• Define requirements for periodic reviews of environmental performance and continual improvement.

A preliminary SBMP is provided in Appendix I of this report and it is anticipated that this will ultimately be updated to reflect final conditions of approval and detailed design of the WWTP and wetland systems.

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6. PLANNING ASSESSMENT

This section of the report provides an assessment of the Cedar Grove WWTP against the applicable statutory planning framework.

Sustainable Planning Act 2009 The Sustainable Planning Act 2009 (SP Act) sets out the town planning and development assessment framework within Queensland. In accordance with Schedule 3 of the SP Reg 2009, all aspects of PDA-related development are identified as development that cannot be declared to be development of a particular type and accordingly, assessment of the development application will proceed under the ED Act (refer to Section 6.2 below).

Economic Development Act 2012 The ED Act is the statutory instrument that declares and manages PDAs and establishes a Development Scheme as the mechanism for assessment of PDA-related development.

Section 87 of the ED Act states that in deciding an application made under the Act, EDQ must consider:

(a) the main purpose of this Act;

(b) any relevant State interest;

(c) any submissions made to it about the application, during the submission period; and

(d) the following, as in force or as prepared when the application is decided—

(i)…….

(ii) for another priority development area—

(A) if there is a development scheme for the area—the development scheme; …and

(e) any PDA preliminary approval in force for the relevant land; and

(f) any SPA3 preliminary approval in force for the relevant land.

The subject site is located within the Greater Flagstone PDA (refer to Figure 6-1), which was formerly referred to as the Greater Flagstone Urban Development Area (UDA). The UDA was declared on 8 October 2010 under the Urban Land Development Authority Act 2007 (ULDA Act) and has since been superseded by the ED Act. On the same date as the UDA was declared, the Greater Flagstone Interim Land Use Plan (ILUP) also commenced. The ILUP has since been superseded by the Greater Flagstone PDA Development Scheme (the Development Scheme), which is the primary land use planning document for development assessment within the PDA. The Development Scheme commenced in October 2011 and remains in force and effect.

In addition to the Development Scheme, all elements listed under Section 87 of the ED Act will be considered as part of this assessment.

3 SP Act

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Figure 6-1: Location of Cedar Grove WWTP site in relation to the Greater Flagstone PDA

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6.2.1 Purpose of the Act The main purpose of the ED Act is ‘to facilitate economic development, and development for community purposes, in the State’.

The Cedar Grove WWTP will contribute to this purpose as it will provide critical wastewater infrastructure required to accommodate future growth and economic development in the Logan South region.

Priority development area development scheme As stated previously in this report, the relevant development instrument for the Greater Flagstone PDA is the Greater Flagstone PDA Development Scheme (the Development Scheme). Particular requirements of this instrument contributing to the planning framework for this PDA development application are detailed in the following sections.

6.3.1 Type of development Section 33(2) of the ED Act defines ‘development’ as:

any of the folowing –

(a) carrying out building work;

(b) carrying out plumbing work or drainage work;

(c) carrying out operational work;

(d) reconfiguring a lot;

(e) making a material change of use of premises.

Under Schedule 1 of the ED Act, a ‘material change of use’ means: a material change of use under the Sustainable Planning Act. Section 10 of the SP Act defines making a material change of use of premises as follows:

Material a change of use, or premises, means-

(a) the start of a new use of the premises; or

(b) the re-establishment on the premises of a use that has been abandoned; or

(c) a material increase in the intensity or scale of the use of the premises.

The application seeks approval for making of a material change of use of premises as it involves a change in intensity and scale of the use of the existing premises.

Under Schedule 2 of the Development Scheme, the proposed development of a WWTP is defined as a ‘utility installation’:

The use of premises used to provide the public with the following services:

• supply of water, hydraulic power, electricity or gas

• sewerage or drainage services

• transport services including road rail or water

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• waste management facilities

• network infrastructure.

The use includes maintenance and storage depots and other facilities for the operation of the use.

6.3.2 Level of assessment According to ‘Map 8 (Zones)’ of the Development Scheme, the Cedar Grove WWTP site is located within the ‘Urban Living Zone’.

Within ‘Table 2 (Levels of Assessment)’ of the Development Scheme, Column 3A identifies making a MCU for a ‘utility installation’ located in the ‘Urban Living Zone’ as permissible (assessable) development, as the change of use is not mentioned in columns 1, 2, or 3B of the table.

According to Section 3.2.4 of the Development Scheme, ‘assessable development requires a development application to be lodged with the [EDQ] for assessment and decision’, prior to the development commencing.

The applicant therefore seeks a PDA Development Permit for a Material Change of Use for a ‘utility infrastructure’ (being the Cedar Grove WWTP).

6.3.3 Public notification Section 3.2.10 of the Development Scheme outlines the circumstances in which public notice of the development application is required:

A UDA [PDA] development application will require public notification if the application:

• Includes a proposal for development which does not comply with the zone intents

• Is accompanied by a context plan required under section 3.2.8, or

• Is for development which, in the opinion of the ULDA [EDQ}, may have undue impacts on the amenity or development potential of adjoining land under separate ownership, including development for a non-residential use adjacent to land approved for or accommodating a residential use in the urban living zone.

It is noted here that two EDQ-endorsed Context Plans have been approved within the Greater Flagstone PDA. These plans do not apply to the site which is the subject of this application.

At a pre-lodgement meeting with EDQ on 14 December 2016 (refer to Appendix K for the minutes of this meeting), LoganWIA received the advice that:

• A context plan is unlikely to be required given the proposal is for a ‘utility infrastructure’, which is materially consistent with the detailed planning intentions for the area under the Development Scheme, notably: the zone intent (complies with the ‘Urban Living Zone’), and; ‘Map 2 – Vision’ (the proposed WWTP is located on land identified as ‘utilities’).

• Public notification will (potentially) not be necessary if the applicant is able to demonstrate the Cedar Grove WWTP includes a range of mitigation which will prevent the development from having undue impact on the amenity of adjoining land uses.

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With respect to the latter, the Cedar Grove WWTP has been designed to ensure potential ‘interface issues’ associated with adjacent land uses are avoided. Notably:

• Screening shrubs, proposed as part of the Landscape Concept Plan (Appendix F), will retain visual amenity and privacy to dwellings located to the south-east, south, south-west, west and north-east of the site (refer to Section 4.1.1 – sensitive receptors)

• The WWTP will not cast shadows or shade on adjacent residential properties as infrastructure components will be low-set (single-storey) and setback significantly from the property boundary

• Vegetation buffering and a significant setback from the property boundary will soften the visual impact on surrounding dwellings of a 6 m stack associated with the inlet works

• Significant tree and shrub planting on site will complement and help integrate the development into bordering sensitive environmental receptors, including the Logan River and Lot 501 on WD6151, which is zoned for ‘environmental management and conservation’ purposes under the Logan Planning Scheme

• Impacts associated with noise, odour and hazardous materials will be managed according to the control measures outlined in the SBMP (refer to Appendix I).

The applicant is confident that these measures will ensure appropriate interfaces are achieved between the proposed development and adjoining areas.

The applicant submits that public notification under Section 3.2.10 of the Development Scheme is not required.

6.3.4 PDA-wide criteria Section 3.3 of the Development Scheme lists the criteria which should be achieved by development within the PDA. A full response to the criteria is provided in Appendix L. This assessment demonstrates that the proposed development will not compromise the planning outcomes of the PDA criteria.

A summary of the key assessment outcomes is shown in Table 6-1.

Table 6-1: Summary of PDA-wide assessment outcomes

UDA-wide criteria Comments

Several parcels of land to the south-east of the WWTP site are zoned as ‘rural residential’ under the Logan Planning Scheme. The lots are not located within the Greater Flagstone PDA. The layout of the WWTP and associated wetland areas takes into consideration these sensitive receptors, with the nearest property boundary occurring approximately 130 m from the nearest Neighborhoods wetland area, and approximately 1 km from the Stage 1 footprint of the WWTP structure. Access to the site will remain via Cedar Grove Road. The infrastructure components of the WWTP will be low-set (single-story), with the exception of a 6 m stack associated with the inlet works. The impact of this stack on the amenity of the surrounding rural area will be offset by vegetation buffering and a significant setback from the property boundary. The WWTP is located on land to the far south of the Greater Flagstone PDA. This land is marked for ‘utilities’, as shown on Map 2 of the Development Scheme. It will not impact upon land envisioned to support higher density Centres development, notably, the ‘major centre core’. The Cedar Grove WWTP development will provide critical wastewater infrastructure to support and meet the anticipated demand of the centres and other communities within the Greater Flagstone PDA.

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UDA-wide criteria Comments The proposed development is a WWTP and is defined as a ‘utility installation’. No residential development is proposed as part of this Housing diversity and affordability development. However, development of the Cedar Grove WWTP is essential and required to support the ongoing supply of housing within the Greater Flagstone PDA. The Cedar Grove WWTP will provide significant wastewater infrastructure. Employment opportunities This infrastructure will facilitate and support the development of planned employment centres in nearby areas. ‘Map 3 – Centres and transport network’ indicates the proposed transport Movement network network and centres. The Cedar Grove WWTP development is not located within or adjacent to these networks or centres. The proposed development is a WWTP and is defined as a ‘utility installation’. The site will not be accessible to the public and is not required Community greenspace network to provide greenspace and recreational functions for the community. However, ongoing design will strive to incorporate opportunities for community engagement, education and public access. The proposed development is a WWTP and is defined as a ‘utility installation’. The site will not be accessible to the public. The Cedar Grove Community facilities WWTP will provide significant wastewater infrastructure to support the development of planned employment and community centres in nearby areas. The Ecological Assessment (refer to Appendix B) confirms the development is in accordance with the environmental and obligations outlined within the PDA guidelines and Commonwealth, State and local government legislature. Natural and cultural values Development will improve the ecological and biodiversity values of the site, notably, the ecological integrity of the ‘biodiversity corridor’ occurring adjacent to the Logan River.

No residential component is proposed as part of this development. The Cedar Grove WWTP site is not located in a bush fire or flooding hazard area, Community safety and development nor within proximity to high voltage transmission lines/corridors. The Cedar constraints Grove WWTP will use native vegetation buffers to provide visual screening and assist in the reduction of noise and odour impacts on surrounding sensitive receptors. The development will be appropriately connected to services and infrastructure to ensure the efficient and effective use of infrastructure (refer to Appendix E). The Cedar Grove WWTP supports the implementation of Service infrastructure this UDA-wide criteria in that it will provide critical water infrastructure to meet the anticipated demand of the communities planned within the Greater Flagstone PDA. The Cedar Grove WWTP is sited on a significantly sized lot. The size of the lot allows for the appropriate siting of all proposed infrastructure, including sufficient parking, access, circulation areas and landscaping (refer to General requirements Appendix E – Infrastructure Services Report, and Appendix F - Landscaping Plan). The Cedar Grove WWTP will incorporate significant landscaping to maintain and enhance visual amenity, and assist in the reduction of noise and odour related impacts.

6.3.5 Zone intent ‘Map 8 – Zones’ of the Development Scheme illustrates the zonings within the Greater Flagstone PDA boundary. The proposed site of the Cedar Grove WWTP development is located within the ‘Urban Living Zone’, which is intended to be developed as neighbourhoods focussed on identifiable and accessible centres and comprising a mix of residential development, including houses, multiple residential and other residential and live-work opportunities. The ‘Urban Living Zone’ is also intended to accommodate a wide range of other non- residential uses.

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Under the Development Scheme (Section 3.4.2 – Zone intents), the intent of the ‘Urban Living Zone’ enables non-residential uses, where it is demonstrated:

• The proposed use has appropriate vehicle access that will not result in excessive number of vehicles passing through residential areas • Caters for the needs of the immediate community and is consistent with, or does not compete or undermine the vitality of the centres hierarchy • Impacts associated with the use (e.g. noise, dust, emissions) will not affect residential or other sensitive uses. The construction and operation of the proposed WWTP will result in additional vehicle movements travelling along Cedar Grove Road near sensitive receptors situated along Cedar Grove Road, Fig Court and Couldery Court (refer to Section 5.5.3). The number of vehicle movements is identified in the Infrastructure Services Report (Appendix E) and is not considered to be excessive. From the Mt Lindesay Highway, access to and from the site is expected to be via Cedar Grove Road for vehicles travelling south, and Undullah Road and Cedar Pocket Road for vehicles travelling north. The current configuration of the road network is such that it is not anticipated that site traffic will access the site using other roads.

As noted in Section 4.1.1, the closest residential sensitive receptor to the site is approximately 20 m to the south-east of the site boundary. Environmental impacts on residential or other sensitive uses arising from the development of Cedar Grove WWTP are assessed in the Odour Impact Assessment and Noise Impact Assessment, presented in Appendix G and Appendix H respectively.

Section 5.5.5 identified that the visual impact of the Cedar Grove WWTP on the rural residential character of the surrounding area is anticipated to be minimal, as the WWTP and associated wetlands will be screened by buffer vegetation. The infrastructure components of the WWTP will also be low-set (single-story), with the exception of a 6 m stack associated with the inlet works. The stack is likely to have an impact on the current uninterrupted view of Flinders Peak from Dennis Road. Proposed mitigation measures, including a significant setback from the property boundary and vegetation buffering, will help to soften the impact of this stack on the amenity and landscape values of the surrounding rural area. The proposed location of buffer planting and potential natural rehabilitation areas along the riparian corridor of the Logan River are shown is the attached Landscape Concept Plan (Appendix F).

The Cedar Grove WWTP is located on land marked for ‘utilities’ on ‘Map 2 – Vision’ of the Development Scheme. As recognised by Section 4 of the Development Scheme (‘The Infrastructure Plan’), infrastructure requirements are critical to achieve the desired planning outcomes. The Cedar Grove WWTP is necessary to facilitate future growth in the Greater Flagstone PDA and cater for the service needs of the communities living in the ‘Urban Living Area’.

The proposed development is therefore consistent with the intent of the ‘Urban Living Zone’.

PDA guidelines and practice notes The provisions of the Development Scheme detailed in the previous section of this report establish the principal planning frameworks and assessment criteria that is to be applied to PDA development applications. There

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are a number of supporting PDA guidelines and practice notes that provide specific detail and design provisions for development within the PDA.

An assessment of the applicable PDA Guidelines for this development application is shown in Table 6-2 below.

Table 6-2: Summary of applicable PDA guidelines

Guideline Applicable Comments

No residential development is proposed as part of this Guideline No. 1: Residential 30 NO development. No residential development is proposed as part of this Guideline No. 2: Accessible housing NO development. Guideline No. 3: Non-resident worker No residential development is proposed as part of this NO accommodation development.

Guideline No.4: Residential Infill in the Blackwater UDA – Blackwater residential infill NO The Cedar Grove WWTP site is not located in Blackwater. guideline Guideline No. 5: Neighborhood planning and No residential development is proposed as part of this NO design development. The guideline contains specific street types for three main land uses typically planned in UDAs: neighborhoods, Guideline No. 6: Street and movement mixed use centres and industrial areas. The proposed NO network development is a WWTP: it is defined as a ‘utility installation’ and therefore does not accord with the described land uses in the Guideline. No residential development is proposed as part of this Guideline No. 7: Low rise buildings NO development. Guideline No. 8: Medium and high rise No medium to high rise buildings are proposed as part of NO buildings this development. No part of the development will be located in an area Guideline No. 9: Centres NO identified as a ‘centre’. The proposed development is a WWTP and is defined as a ‘utility installation’. The proposed development is located Guideline No. 10: Industry and business areas NO on land marked for ‘utilities’, as shown on Map 2 of the Development Scheme. The delivery of infrastructure is a key component of facilitating development within the Greater Flagstone PDA. The Cedar Grove WWTP development will provide significant wastewater infrastructure and will allow the development of planned communities within the PDA. This Guideline No. 11: Community facilities NO development is being undertaken by Council, not a private residential developer. As a ‘utility installation’, no contributions to community facilities are required (refer to Appendix C of the Infrastructure Funding Framework - ‘Non-residential Municipal Charges for all greenfield PDAs: utility installation’). The development application does not involve a Guideline No. 12: Park planning and design NO reconfiguration of a lot. No residential development is proposed as part of this development. The Cedar Grove WWTP will be provided with ‘service infrastructure’. Consideration to the design and Guideline No. 13: Engineering standards YES construction standards outlined in this guideline will be undertaken during the detailed design phase of the project. The development is supported by the Ecological Guideline No. 14: Environmental values and YES Assessment (Appendix B). This report analyses the current sustainable resource use ecological conditions of the subject site and confirms the Cedar Grove WWTP is compliant and in accordance with

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Guideline Applicable Comments the environmental obligations outlined within the PDA guidelines. The site of the Cedar Grove WWTP is subject to flooding. Guideline No. 15: Protection from flood and The proposed engineering design and site layout of the YES storm tide inundation WWTP has considered the EDQ standards for flood protection (refer to Appendix A). No residential development is proposed as part of this Guideline No. 16: Housing NO development. The Cedar Grove WWTP development will not result in the clearing of any remnant vegetation containing endangered regional ecosystems or areas defined in Schedule 1 of the Guideline. The site is not within a ‘priority koala assessable Guideline No. 17: Remnant vegetation and area’ pursuant to the SEQ Koala Conservation SPRP and koala habitat obligations in Greater Flagstone NO is mapped as ‘low value rehabilitation area’ on the Koala and Yarrabilba PDAs Habitat SEQ mapping. No residential development is proposed as part of this development, thus not requiring financial contribution to koala habitat management in the region. The Cedar Grove WWTP development has been designed to ensure potential ‘interface issues’ associated with adjacent land uses are avoided. This has been achieved through a combination of siting, building design, landscaping and other mitigation measures at an individual site level. The ‘interface issues’ identified in Table 1 of this guideline have been addressed explicitly in the following sections or reference documents of this report:

Table 6-3: Assessment of interface issues Interface issue Reference section/document Visual amenity Refer to Landscape Concept Plan in Appendix F. Ecological Refer to Section 4.1.8, (vegetation, Section 5.5.5, and Section waterway or wetland 5.5.12 Guideline No. 18: Development Interfaces YES interface) Visual privacy Refer to Section 5.5.5, and the Landscape Concept Plan in Appendix F. Overshadowing/solar Refer to Landscape Concept access Plan in Appendix F. Existing significant No significant infrastructure uses or infrastructure is currently located adjacent to the site. Intensity or scale of Refer to Section 6.3. development Noise Refer to Section 5.5.7 Air pollutants/odour Refer to Section 5.5.6 Light pollution Refer to Section 4.1 of the SBMP. Hazardous materials Refer to Section 4.6 of the SBMP.

Guideline No. 19: Ripley Road Design The Cedar Grove WWTP development is not located in the NO Guideline Ripley Valley PDA.

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Guideline Applicable Comments

Guideline No. 20: Queen’s Wharf Brisbane The Cedar Grove WWTP development is not located in the PDA public realm and movement network NO Queen’s Wharf Brisbane PDA. planning and design guideline

Relevant state interests Section 87 of the ED Act defines a state interest. A state interest includes:

(a) an interest relating to the main purpose of this Act; and

(b) an interest that, in MEDQ’s opinion, affects an economic, community or environmental interest of the State or a region.

The State Planning Policy (SPP) outlines 16 state interests. An assessment of the proposed development against these interests is contained in Table 6-4.

Table 6-4: State interest assessment

State interest Applicable Impact of development

The Cedar Grove WWTP will allow growth of the Greater Flagstone PDA by providing critical wastewater infrastructure. No residential development is Housing supply and NO proposed as part of this development. However, development of the WWTP diversity is essential and required to support the supply of housing within the Greater Flagstone PDA. The Cedar Grove WWTP will allow growth of the Greater Flagstone PDA by providing critical wastewater infrastructure. The delivery of ‘a wide range of Liveable communities YES infrastructure’ is a key component of facilitating liveable communities in Queensland (DILGPc, 2016, p. 18). The Cedar Grove WWTP will not impact upon agricultural resources or Agriculture NO associated land uses. It may, however, provide a potential future supply of water that may be used for irrigation purposes. The Cedar Grove WWTP will contribute to this state interest through the Development and YES provision of employment opportunities during both construction and Construction operation. The proposed development is a WWTP and is defined as a ‘utility Mining and Extractive installation’. No resource extraction is proposed as part of the development. NO Resources The development will not involve land use conflicts with mining and extractive resource tenures. The Cedar Grove WWTP will facilitate growth of the Greater Flagstone PDA by providing critical wastewater infrastructure. It will not impact on any Tourism NO significant tourism developments. However, the development has the potential to facilitate future tourism opportunities by providing appropriate infrastructure services. The Cedar Grove WWTP is located within a cleared area and is therefore unlikely to impact on matters of federal or state environmental significance (refer to Ecological Assessment in Appendix B). The development involves Biodiversity YES mitigation strategies to reduce potential impacts on matters of local environmental significance, that is, the Logan River. The ecological and biodiversity values of the site will be enhanced through vegetation planting (refer to Section 5.5.5). The Cedar Grove WWTP does not occur within a coastal environment and Coastal Environment NO therefore does not affect the implementation of this state interest. The Cedar Grove WWTP site is not mapped as containing areas of cultural Cultural Heritage NO or heritage significance and therefore does not affect the implementation of this state interest (refer to Section 4.1.14).

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State interest Applicable Impact of development

The Cedar Grove WWTP will impact upon the Logan River. The preferred effluent strategy option is to use wetland treatment before discharging to the Logan River (refer to Section 5.3). The extent of the impact of the proposed Water quality YES effluent strategy on water quality are provided in receiving environment water quality impact assessment (Appendix J). The design objectives for mitigating this impact, are outlined in the prepared SBMP for the development (refer to Appendix I). The Cedar Grove WWTP development will be operated in a manner that considers the sensitivity of the surrounding environment and prevents the release of dust and odour emissions resulting in amenity impacts to sensitive Emissions and YES receptors (Refer to SBMP, Appendix I). Potential environmental impacts hazardous activities associated with the operation of sewerage treatment (ERA 63) will be subject to a framework of conditions established under an approved environmental authority (refer to Section 6.8.2 of this report). The Cedar Grove WWTP is located within an area which, under the Logan Planning Scheme, is identified as having potential to be affected by landslide, flooding or bushfire hazard. In line with this state interest, the layout of the proposed WWTP has been designed in consideration of the Natural hazards, risk YES impact of these hazards. This consideration has included avoiding or and resilience mitigating the risks associated with natural hazards (notably flooding) to an acceptable or tolerable level. Refer to Section 4.2.3 (landslide), Section 4.2.2 (flooding) and Section 4.2.1 (bushfire) for further information regarding the siting of the project in relation to these hazards. The Cedar Grove WWTP will facilitate growth of the Greater Flagstone PDA Energy and water NO by providing critical wastewater infrastructure, and therefore supports the supply implementation of this state interest in water infrastructure provision. The Cedar Grove WWTP will not impact on any state transport State transport infrastructure. The nearest state controlled road is the Mt Lindsay Highway, NO infrastructure 3 km from the boundary of the site. The predicted traffic movements will not impact in this road. The Cedar Grove WWTP is not located within a building restricted area or Strategic airports and NO obstacle limitation area, and therefore does not impact upon the aviation facilities implementation of this state interest. The Cedar Grove WWTP is not located in the vicinity of any strategic ports, Strategic ports NO and therefore does impact upon the implementation of this state interest.

PDA preliminary approvals in force To the knowledge of the applicant, no PDA preliminary approvals have been issued over the land.

SP Act preliminary approvals in force On 27 August 2010, a combined application (Council reference COM-49/2008) was approved over Lots 1 and 2 on RP25779, and Lot 66 on W3123 at Dennis Road in Cedar Grove. The applicant for the development application was Great Southern Land.

These approvals components of this approval were:

• A preliminary approval for material change of use of premises to override the planning scheme – Rural zone to Rural Residential B zone

• A development permit for reconfiguring a lot – three existing lots into 101 lots.

The identified approvals lapsed on the 27 August 2014, with no development started.

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To the knowledge of the applicant there are no additional SP Act preliminary approvals which have been issued over the land.

Related legislation A range of planning provisions that are not specifically listed under Section 87 of the ED Act have also been considered during the preparation of this development application.

6.8.1 South East Queensland Regional Plan At the time of its publication, the South East Queensland Regional Plan 2009 – 2031 (SEQ Regional Plan) recognised Greater Flagstone as an ‘Identified Growth Area’ which could accommodate a major centre for residential, employment, and other principal regional centre services. Development within the Greater Flagstone Identified Growth Area is envisioned to comprise of ‘compact communities with ready access to an efficient and effective public transport system...[and] walkable neighbourhoods with a range of housing choices and affordability, local employment opportunities, retail, community facilities and services, and recreational opportunities’ (DIP 2009, p.28). However, the SEQ Regional Plan acknowledges that development within the Greater Flagstone Identified Growth Area (and other significant growth areas in Logan) will ‘depend on the timely delivery of state and local infrastructure, particularly water and sewerage, road and public transport infrastructure’ (DIP 2009, 29).

Despite the identification of Greater Flagstone as an Identified Growth Area under the plan, the sub-region area was not included in the ‘Urban Footprint’, instead being located in the ‘Regional Landscape and Rural Production Area’. Under the regulatory provisions of the SEQ Regional Plan, land located in this category is intended to be protected from ‘inappropriate development, particularly urban or rural residential development’.

Under the recently released Shaping SEQ: Draft South East Queensland Regional Plan (DILGP, 2016c) (the Draft SEQ Regional Plan), Greater Flagstone is identified as a planned area of greenfield growth and has been included in an expanded Urban Footprint boundary [refer to Chapter 3 - ‘Grow Map 1’ in the Draft SEQ Regional Plan (DILGP, 2016c)]. The Draft SEQ Regional Plan further emphasises the role of Greater Flagstone as a key development area to accommodate potential future growth.

Consistent with this proposed vision for future greenfield growth under the Draft SEQ Regional Plan, the Cedar Grove WWTP development will facilitate and support growth within the Greater Flagstone PDA by ensuring the area is efficiently serviced by appropriate wastewater treatment and disposal infrastructure.

6.8.2 Environmental Protection Act 1994 The EP Act aims to protect Queensland’s environment while allowing for development that improves the total quality of life, both now and in the future, in a way that maintains the ecological processes on which life depends.

Under Section 19 of the EP Act, an ERA may be prescribed:

(1) if the Governor in Council is satisfied— (a) a contaminant will or may be released into the environment when the activity is carried out; and (b) the release of the contaminant will or may cause environmental harm.

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Sewage treatment activities (ERA 63) are defined as a prescribed activity under Section 19 of the EP Act. Under Schedule 2, Part 13 of the Environmental Protection Regulation 2008 (EP Regulation), the operation of this activity at the proposed WWTP development will be defined as falling within threshold ‘1 (e) - operating a sewage treatment works with a total daily peak design capacity of more than 10,000 but less than 50,000 EP’.

A development application (Material Change of Use) for this type of development will be made to the Department of Infrastructure, Local Government and Planning (DILGP) under the provisions of the SP Act4.

4 Additional and separate from the current application under assessment.

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7. CONCLUSION

LoganWIA has prepared this planning assessment on behalf of Logan City Council to support a development application for the proposed Cedar Grove WWTP on a Council-owned site located at Cedar Grove Road, Dennis Road and Rogers Road in Cedar Grove, Logan City.

Specifically, the application seeks approval from EDQ for a PDA Development Permit for a Material Change of Use under the Greater Flagstone PDA Development Scheme for the purposed of Utility Infrastructure (WWTP).

Consistent with the vision for future greenfield growth under the Draft SEQ Regional Plan, this application demonstrates that the Cedar Grove WWTP is critical to ensuring that anticipated growth within the Greater Flagstone PDA is serviced with appropriate wastewater treatment and disposal infrastructure.

It is acknowledged that development activities and the intensification of land usage associated with the Cedar Grove WWTP have the potential to impact on water quality in the Logan River, and result in nuisance and/or harm to surrounding sensitive receptors, the environmental values and visual amenity of the area.

The material provided as part of this application has demonstrated that these risks will be adequately managed through a combination of siting, building design, landscaping and mitigation measures, as presented in the accompanying Site Based Management Plan.

Further, the application has demonstrated that the Cedar Grove WWTP development complies with the outcomes sought by the ED Act and the relevant requirements of the Greater Flagstone PDA Development Scheme.

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8. RECOMMENDATIONS

The Logan Water Infrastructure Alliance recommends that the MEDQ favourably considers the proposed development and approves the application, subject to relevant and reasonable conditions.

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9. REFERENCES

Cardno 2016a. Plant Noise Impact Assessment: Cedar Grove Waste Water Treatment Plant Stage 1. Report prepared for Logan Water Infrastructure Alliance, December 2016. Cardno, Brisbane, Queensland.

- 2016b. Logan South Wastewater Servicing Strategy. Report prepared for Logan Water Infrastructure Alliance, December 2016. Cardno, Brisbane, Queensland

Department of Infrastructure, Local Government and Planning (DILGP). 2016a. ‘Priority Development Area development approvals: Greater Flagstone’, in Development Assessment. Accessed 14 December, 2016, http://www.dilgp.qld.gov.au/planning/development-assessment/priority-development-area-development- approvals.html

- 2016b. ‘Priority Development Area development applications: Greater Flagstone’, in Development Assessment. Accessed 14 December, 2016, http://www.dilgp.qld.gov.au/planning/development- assessment/priority-development-area-development-applications.html

- 2016c. Shaping SEQ: Draft South East Queensland Regional Plan. Accessed 14 December, 2016, http://www.dilgp.qld.gov.au/noindex/shapingseq/draft-south-east-queensland-regional-plan.pdf

Department of Infrastructure and Planning (DIP). 2009. South East Queensland Regional Plan. Accessed 15 December, 2016, http://www.dilgp.qld.gov.au/resources/plan/seq/regional-plan-2009/seq-regional-plan- 2009.pdf

Economic Development Queensland 2016 Logan South Wastewater Servicing Strategy

Logan Water Infrastructure Alliance (LoganWIA), 2016, Cedar Grove Wastewater Treatment Plant: Stage 1 Effluent Management Strategy – Task number LS-003.

PriceFinder. 2016. Property Report for 0 Cedar Grove Road, Cedar Grove, QLD 4285. Property Data Solutions, Brisbane.

Urban Land Development Authority (ULDA). 2011. Greater Flagstone Urban Development Area Development Scheme. Accessed 12 December, 2016, https://www.dilgp.qld.gov.au/resources/plan/pda/greater-flagstone-development-scheme.pdf

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Appendix A WWTP concept site layout

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Appendix B Ecological assessment

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Appendix C Aboriginal cultural heritage search

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Appendix D Environmental management register / contaminated land searches

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Appendix E Infrastructure services report

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Appendix F Landscape concept plan

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Appendix G Odour assessment

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Appendix H Noise assessment

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Appendix I Site based management plan

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Appendix J Water quality modelling

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Appendix K Pre-application correspondence from EDQ

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Appendix L Assessment against the relevant PDA-wide criteria

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