SCAP Agenda Item 3.1.1
25 October 2018
#13167351
SA Water
Northern Adelaide Irrigation Scheme (NAIS) – Earth Banks Storage (EBS)
Lot 115 Church Road, Korunye
312/V006/18 TABLE OF CONTENTS
PAGE NO AGENDA REPORT 1-17 ATTACHMENTS 1: APPLICATION DOCUMENTS a. DEVELOPMENT APPLICATION REPORT (including 18-44 appendices): 1. Certificate of Title 45-47 2. EBS Site Plan 48 3. EBS Cross sections 49 4. Tonkin Consulting hydrological assessment of 50-57 Low risk Flood Zone 5. Construction Environmental Management Plan 58-93 6. Traffic Management Plan 94 7. FMG Waste Classification report 95-111 8. SA Water NAIS Project above ground storage 112 options Kaurna Heritage Survey 9. Aboriginal Heritage Discovery Procedure 113 10. Development Application Lodged for property 114 sub-division 11. Electricity Infrastructure Statement 115-116 2: COUNCIL COMMENTS 117-123 3: REPRESENTATION 124 4: DEVELOPMENT PLAN PROVISIONS 125-129
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OVERVIEW
Application No 312/V006/18 Unique ID/KNET ID 2018/15699/01 Applicant SA Water Proposal Construction of two 200ML lined above ground recycled water Earth Bank Storages, with a reticulated pump and ancillary infrastructure. Subject Land Porter Road, Korunye Zone/Policy Area Primary Production Zone Relevant Authority Minister for Planning Lodgement Date 16 July 2018 Council Adelaide Plains Council Development Plan Mallala Council Development Plan Consolidated 20 February 2018 Type of Development Crown application Public Notification Development exceeds $4 million – Section 49 public notification requirement Representations One (1) wishing to be heard Referral Agencies Adelaide Plains Council Adelaide & Mt Lofty Ranges NRM Board Essential Services Commission Report Author Sharon Wyatt, Principal Project Officer
EXECUTIVE SUMMARY
The Northern Adelaide Irrigation Scheme (NAIS) is a private/public partnership developed by PIRSA and led Northern Adelaide Plains Agribusiness Initiative which is seeking to expand the use of recycled water for horticultural irrigation in the Northern Adelaide Plains.
The application is for the construction of two 200ML lined above ground recycled water earth bank storages (EBS), a reticulation pump and ancillary infrastructure to support the broader NAIS. Upon completion, NAIS will be capable of providing 12GL pa for commercial field crops and animal husbandry in the Northern Adelaide Plains region.
The subject land is located approximately 5km north-west of Two Wells at the corner of Hart and Porter Roads. The site consists of predominantly farming land, has been previously cleared with minimal vegetation. The site has been chosen due to being largely outside the flood zone and proximity in the primary production zone.
The proposal underwent a public notification process from 8 August 2018 to 7 September 2018 during which one (1) representation was received. The representation raised concerns relating to impacts during and post construction (dust, noise, traffic, revegetation, pest animals).
The proposed development is within the Primary Production Zone which promotes the protection of primary production land from encroachment of incompatible uses, reinforced by Horticulture Policy Area 3, which encourages horticulture land pursuits.
Whilst the proposed development does not fall within one of the envisaged uses for the Primary Production Zone nor the Horticulture Policy Area 3, the proposal is consistent with the policies for the Zone and Policy Area in that it will support the establishment of a proximate, year-round water supply to support productive and sustainable production.
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Temporary impacts during the construction phase can be managed through a Construction Environmental Management Plan (CEMP). On balance, the proposal is supportable, with a recommendation to seek the Minister’s endorsement subject to appropriate conditions.
ASSESSMENT REPORT
1. BACKGROUND
The Northern Adelaide Plains is an important horticultural region that accounts for approximately one third of the State’s horticulture production. To facilitate the expansion of production in the region large volumes of affordable, reliable, recycled water is required. When complete, the Northern Adelaide Irrigation Scheme project will make an additional 12 GL per year of treated recycled water available to support local horticulture operations. This application follows on from a previously approved development application for a new treatment plant, pump station and balancing storage tank (DA 361/V001/18) at the SA Water Bolivar Waste Treatment facility.
2. DESCRIPTION OF PROPOSAL
Application details are contained in the ATTACHMENTS.
The proposal is for the construction of two 200ML lined above ground recycled water earth bank storages (EBS), a reticulation pump and ancillary infrastructure (electrical switchboard building, back-up diesel generator, access road, perimeter security fencing and possible bird net) to support the broader NAIS.
Each EBS will be approximately 197.5m x 109.5m with 5m in height.
The pump station will consist of eight (8) low noise canned pumps. The pumps will be located below the ground to reduce noise. The pumps will be painted in Pale Eucalypt.
The pump station, associated pipework and electrical switchboard will be contained within a prefabricated building approximately 8m (wide) x 2.4m (long) x 3m (high) and will be constructed in steel (colour Pale Eucalypt) with a concrete base.
A diesel generator is proposed to be installed. This will guarantee supplies during unplanned power outages. This will be located on a concrete pad with self-contained noise attenuation.
The site will be accessed via a new access point and internal access road from Porter Road. The access point and road will be constructed from asphalt. It will be 5m wide with an open swing security gate located approximately 15m from Porter Road.
A 2.4m high security fence will be installed around the perimeter toe of the EBS, associated infrastructure and internal emergency fire access track. The security fence is set back approximately 10m from the property boundary and will be either black or grey (to be determined). The security fence is required to ensure public safety.
A boundary stock fence to 1.2m in height will be installed around the property boundary.
The majority of the material used for the construction of the EBS will be sourced on site through cut and fill. No material will need to be required to be disposed off-site. Any additional material needed will be sourced from spoil created from the construction of the NAIS transfer pipeline. This will be stockpiled on site at the EBS until required. Any spoil brought to the site will be classified as “waste fill” and suitable for re-use for the construction of the EBS (as per the EPA Waste derived Fill Guidelines).
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Exact quantities of material required are unknown at this stage. Should there still be a deficit of material required to construct the EBS, extra material will be sourced from SA Water approved Quarry material suppliers and NRM Board approved weed free.
A portion of the south eastern section of the security fence will intersect with the Adelaide Plains Council flood hazard risk areas (100yr ARI flood plains). Fences within this area are listed in the Mallala Council Development Plan as being non-complying unless ‘the fencing maintains a mesh size greater than 100mm between ground level and 300mm’.
To accommodate this hazard risk, SA Water will change their standard fence type, with the bottom 300mm of the proposed chain mesh fence to have a larger mesh size to ensure compliance with the Development Plan policy.
SA Water has committed to develop landscaping (trees and shrubs) in a strip 5-7m wide around the perimeter of the EBS to soften the visual impact of both the EBS and the security fence, in particular for residents on Porter Road and Hart Road. Native grasses will also be seeded on the banks of the EBS to stabilise the exposed embankment.
The EBS has been designed to allow for the inclusion of a bird net if required. A bird survey will be undertaken to determine if the EBS is causing the introduction of unwanted bird species to the surrounding primary production areas. If it is determined that a net is required, it will be installed at water level and will not be visible to the public from outside the site.
The construction phase of the development is expected to be 6-8 months in duration.
Figure 1: Proposed site layout
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Figure 2: Eastern cross section showing landscaping, security fence & boundary fence
Figure 3: Southern cross section
Figure 4: Back up diesel generator
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Figure 5: example of SA Water standard security fencing
Figure 6: example of bird netting (if required)
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3. SITE AND LOCALITY
3.1 Site Description
The site consistent of one (1) allotment, described as follows:
Lot No Section Street Suburb Hundred Title A1 A118 Porter Road Korunye Port Gawler CT 5662/19
The subject land is located approximately 5km north-west of Two Wells at the corner of Hart and Porter Roads (both council-maintained dirt roads) approximately 400m east of Port Wakefield Road, in the area named Korunye, Hundred of Port Gawler: Allotment 1, F216939, Section A118 (CT Volume 5662 Folio 19).
The land was subject of a separate land division (1 into 3 allotments), approved 25 August 2018. This division created two additional allotments. Following the subdivision, SA Water has purchased the middle allotment (Allotment 1).
The subdivision enables SA Water to use this allotment leaving the balance of the land for primary production use and maximises the buffer space to nearby dwellings.
The site is partially situated within the 2015 Adelaide Plains Council flood hazard risk areas (100yr ARI flood plain).
Figure 7: Locality
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Figure 8: Land Division (EBS to be located in middle allotment)
3.2 Locality
The subject site is located within the Primary Production Zone and Horticulture Policy Area 3 of the Mallala Council Development Plan.
The adjacent and surrounding land use is largely agricultural, with some livestock and horticulture land use on large rural land holdings.
Two (2) sensitive receptors have been identified. One receptor is located approximately 130m from the eastern boundary and the other one is approximately 240m from the southern boundary of the site.
Figure 9: aerial view of site
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Figure 10: nearest sensitive receptors
4. COUNCIL COMMENTS
4.1 Adelaide Plains Council
The Council is generally in support of the proposal. The Council acknowledges that whilst the proposed development does not neatly fall within one of the envisaged uses for the Primary Production Zone nor the Horticulture Policy Area 3, the development will help realise the areas full potential for horticultural development and is generally consistent with the provisions of the Development Plan.
Council has recommended a number of conditions and notes, with specific mention of ensuring appropriate access and vegetation screening. These will need to be taken into account in any final recommendation to the Minister for Planning.
5. REFERRAL BODY COMMENTS
Referral responses are contained in the ATTACHMENTS.
5.1 Adelaide and Mount Lofty Ranges NRM Board
Provided ‘no comment’ on the proposal.
6. PUBLIC NOTIFICATION
The application was subject to public notification pursuant to Section 49(7d) of the Development Act 1993 as the construction works totals more than $4 million.
Public notification was undertaken via public notice in The Advertiser and the Plains Producer on 8 August 2018. One (1) representation was received. The representor raised
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concerns regarding dust, noise and traffic movements during construction, revegetation and pest control post construction.
SA Water met with the representor to discuss mitigation measures and committed further discussions during the construction program to ensure a clear line of contact during the project with any concerns to be actioned quickly.
The representor wishes to be heard by the SCAP.
A copy of the representation is contained in the ATTACHMENTS
7. POLICY OVERVIEW
The subject site is within the Primary Production Zone and the Horticulture Policy Area 3 as described within the Mallala Development Plan (consolidated 20 February 2018).
Relevant planning policies are contained in the ATTACHMENTS and summarised below.
7.1 Primary Production Zone: OB 1, 2, 7 PDC 12, 15
• The long term continuation of primary production • Economically productive, efficient and environmentally sustainable primary production • Development that contributes to the desired character for the zone • Development should provide an access way of at least 3 metres wide that provides access for emergency vehicles.
The desired character for the zone specifies that ‘this zone will continue to accommodate grazing, cropping and intensive animal keeping and actively encourage the growth of intensive horticulture (including enclosed horticulture), land based inland aquaculture and associated value adding where able to readily access suitable fit-for- purpose water.’
7.2 Horticulture Policy Area 3: OB 1, 2
• A policy area primarily for horticulture • Development that contributes to the desired character for the policy area
The desired character for the policy area specifies that ‘to realise the area’s full potential for horticulture development will require the provision of adequate water supply.’ It also specifies that ‘buildings and structure will be located and designed to have regard to flooding.’
7.3 Council Wide
Infrastructure: OB 1, 2; Hazards: OB 1, 4, 6 PDC 2, 4, 7; Natural Resources: OB 4, 6, 7 PDC 2, 3, 6, 8, 10, 11, 21, 33; Interface Between Land Uses: OB 1, 3 PDC 2, 12, 15; Landscaping, Fences and Walls: OB 1, 2 PDC 2; Orderly and Sustainable Development: OB 2, 3, 4 PDC 1, 2, 3; Waste: OB 1 PDC 1, 2; Design and Appearance: OB 2 PDC 13; Transport and Access: PDC 25, 26
• Infrastructure provided in an economical and environmentally sensitive manner • The visual impact of infrastructure facilities minimised • Development located and designed to minimise the risks to safety and property from flooding • Development located on land subject to hazards as shown on the Overlay Maps – Development Constraints should not occur unless it is sited, designed and
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undertaken with appropriate precautions being taken against the relevant hazards • Development should ensure that South Australia’s natural assets such as biodiversity, water and soil are protected and enhanced • Development should retain existing areas of native vegetation and where possible contribute to revegetation using locally indigenous plant species • Development should be sited and designed to minimise negative impacts on existing and potential future land uses desired in the locality • Landscaping should … include the planting of locally indigenous species where appropriate • Development that does not jeopardise the continuance of adjoining authorised land uses • The economic base of the region should be expanded in a sustainable manner
8. PLANNING ASSESSMENT
The application has been assessed against the relevant provisions of the Mallala Development Plan (consolidated 20 February 2018), which are contained in the Attachments.
8.1 Land Use and Character
The subject site is utilised for farming (sheep grazing) purposes. SA Water has purchased a portion of the land (Allotment 1) to establish the EBS. The surrounding property (new Allotments 2 and 3) will be retained by the existing land holder and will continue to be used for primary production purposes.
The development of the EBS is an essential piece of infrastructure for the NAIS pipeline which enables properties in the region to be connected to a reliable water supply for horticultural use. This is considered consistent with the Objectives and desired character for both the Primary Production Zone and the Horticulture Policy Area 3 which encourage the continuance and expansion of primary production and horticulture pursuits.
The development of infrastructure does not fall within the envisaged forms of development for either the Primary Production Zone or the Horticulture Policy Area 3, however the NAIS EBS is a type of infrastructure that will directly support those forms of development envisaged within the region.
The introduction of the EBS will not change the predominant use of land within the region, will contribute to the desired character for the policy area and zone and will not jeopardise the continuance of adjoining authorised land uses.
8.2 Design and Appearance
New built development within the zone should support the continuation of primary production, which generally means ancillary structures, such as farm buildings, grain storage and other productive infrastructure. Farm dams and irrigation infrastructure are relatively common features in rural areas.
For the proposed works, ancillary infrastructure has been grouped together, to the immediate north of the EBS. This provides a buffer to adjoining residents (located approximately 480m south and south-east) and should have a minimal impact on the visual attractiveness of the area, given the setbacks proposed.
The proposal includes a 2.4m security fence around the EBS and associated infrastructure along with a boundary stock fence surrounding the entire site. Landscaping of 5-7m in width around the security fence and seeding of native grasses 11 SCAP Agenda Item 3.1.1
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on the banks of the EBS will help reduce visual impacts of the development. The stock fence is in keeping with surrounding fences in the area.
Figure 11: existing view of the site
8.3 Heritage
The applicant undertook a cultural Heritage survey with the local first peoples (Kaurna) at the EBS location and no areas or objects of Aboriginal archaeological or cultural significance were encountered. A Cultural Heritage Management Plan has been developed for the overall broader NAIS project. The location of the proposed EBS is identified as a low risk site in the plan. There are no listed items of European Heritage in the vicinity of the proposed development.
8.4 Traffic Impact, Access and Parking
All construction traffic will enter the site via Porter Road (Council managed road). No new roads (only internal roads) or cross overs are proposed.
The Development Plan requires that development should have access from an all- weather public road and should provide for safe and efficient movement of vehicles that avoids unreasonable interference with the flow of traffic on adjoining roads.
The application includes a Truck Haulage Route (north of Gawler River) but not a Traffic Management Plan. Access to the project site is provided by Porter Road which is unsealed.
The majority of the construction materials will be sourced on site from cut and fill activities. Traffic movements during the operational phase are expected to be low, and predominantly light vehicles. Ongoing traffic impacts are expected to be negligible.
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Council has not raised any concerns in relation to the temporary increase in traffic and associated impacts during the construction phase. Council has requested a condition of approval that the development must have safe and convenient access to Porter Road, designed and constructed to the satisfaction of Council.
The Development Plan does not provide car parking rates for any form of development that is comparable to an EBS.
A small designated parking area next to the administration area. It is expected that this area has sufficient space to provide adequate car parking to meet operational staffing requirements which is very low.
Construction works can be easily accommodated on-site.
8.5 Interface between Land Uses
The proposed development will be located in a predominantly agricultural, rural locality with low levels of existing background noise and good quality air.
The nearest residents are 480m away (to the south and south east). It is expected that during construction there will be minor dust impacts.
The applicant proposes mitigate such impacts through the use of water carts, and that if excessive dust persists the applicant has committed to ceasing construction until the impacts have cleared (refer CEMP). This is considered standard acceptable practice and Council is supportive of this management method.
There are expected to be negligible dust impacts during the operational phase of the development as there will be minimal traffic to and from the site (with the site will be unmanned with weekly site inspections only). Grasses on the banks of the EBS will assist with soil stability.
During construction, there is expected to be increase in noise levels from the use of machinery, but limited to standard work hours. It is recognised that such machinery noises are not uncommon, particularly from various forms of farm equipment.
It is noted that the dwelling on the southern allotment is situated closer to Port Wakefield Road (220m) than the EBS (240m) and as such is unlikely to be significantly impacted during the construction period.
The dwelling to the south-east is located 130m from the boundary of the EBS, however is screened with an existing shed and landscaping, as such, noise impacts during construction are expected to be minimal.
Noise during the operational phase is expected to be negligible and the placement of the pump station and diesel generator to the north of the EBS reduces any potential impact to the 2 sensitive receptors.
The potential for odour impacts is expected to be low as the water to be stored in the EBS will be sourced from post treated water (from the Bolivar site).
A development of this nature may attract pest insects, in particular mosquitos. SA Water proposes to manage this risk through the raising and lower of the water within each EBS. This will create a balancing storage of water as opposed to a stagnant pool of water which, along with continuous monitoring, is a standard industry practice to reduce the risk of insect and algal blooms. This potential impact can be successfully managed through the Operational Environmental Management Plan. 13 SCAP Agenda Item 3.1.1
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The visual impact of the development is expected to be low due the distance from the sensitive receptors and the incorporation of landscaping around the perimeter of the site with and grasses seeded on the banks of the EBS.
Council has requested a condition of approval that requires the applicant to establish all vegetation screening within the first planting season following commencement of the use of the development, and maintained at all times to the satisfaction of Council.
A development of this nature may attract birds to the water source which may in turn impact upon the surrounding primary production area. To accommodate for this SA Water has committed to undertake monitoring and a bird survey to determine if unwanted bird species migrate to the area as a result of the uncovered EBS. If birds are detected, SA Water will install a bird net. This potential impact can be successfully managed through the Operational Environmental Management Plan.
The applicant has already developed a stakeholder engagement plan with the adjoining neighbours to ensure that they are kept informed as work on the site progresses.
8.6 Landscaping
The Development Plan encourages the inclusion of appropriate planting and landscaping works, using locally indigenous plant species where possible, and functional fences and walls that enhance the attractiveness of the development.
Significant landscaping of a 5-7m wide vegetative screen around the entire permitter of the EBS and seeding of native grasses on the banks of the EBS is proposed. This landscaping will provide a naturalistic buffer strip and help soften the visual impact of both the EBS and the security fencing; and consistent with current policies.
Seeding of the banks of the EBS will be undertaken via direct seeding with custom seed machines into a weed-free soil profile.
Council advises that their horticulture team leader has reviewed the proposed plant species listed in the application and confirmed that the proposed vegetation is appropriate.
8.7 Natural Resources
The Development Plan seeks the retention, protection and restoration of the natural resources and environment; natural hydrological systems and environmental flows reinstated, maintained and enhanced; and minimal disturbance and modification of the natural landform.
The Development Plan seeks development in line with Water Sensitive Design principles. Stormwater should be captured and re-used where practical and safe, and water quality should be protected.
8.7.1 Stormwater and Water Quality
The proposal has incorporated stormwater management into the design. The EBS will be capable of capturing stormwater and a stormwater drainage system will be constructed between the two storages.
The proposal utilises an existing naturally defined flow path to cater for its stormwater requirements.
The planting of vegetation will assist in the onsite surface water management. 14 SCAP Agenda Item 3.1.1
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Strategies to manage stormwater and water quality during the construction period are contained within the Construction Environment Management Plan.
The proposed stormwater management on the site is considered to be consistent with the objectives and policies related to stormwater of the Natural Resources (General Section) of the Development Plan.
8.7.2 Native Vegetation
There is no native vegetation present on the site. There exists some roadside vegetation on Porter Road. It has not been identified that any roadside vegetation will require removal, however is noted that if so, a native vegetation offset may be required.
The use of material sourced from cut and fill on site will not result in any introduced weeds to the site. Any imported material is to be weed free.
8.8 Hazards
Flooding
The EBS and ancillary infrastructure are located outside of the flood hazard risk areas however, the south-east section of the security fence will intersect with the 2015 Adelaide Plains Council flood hazard risk area (1 in 100-year Average Recurrence Interval - ARI).
Within the Primary Production Zone fences within any of the Flood Hazard Risk Areas are listed as non-complying unless ‘it is located within the Low Flood Risk Hazard Area’ and ‘the fencing maintains a mesh size greater than 100mm between ground level and 300mm’.
A section of fence will be located in a Low Flood Risk Area. To mitigate any impacts, SA Water will modify their standard fence type, with a wider mesh on the lower 300mm portion of the proposed chain mesh fence.
SA Water commissioned a flood assessment (Tonkin Consulting) which concluded that ‘the proposed filling associated with the EBS construction will not encroach upon a ‘High Flood Hazard Risk Area’ and can be undertaken without increasing the flood risk for the surrounding areas during a 100 year ARI flood event’.
Council advises that it is satisfied with this assessment, and considers that is it unlikely that a flood on this site will jeopardise the community safety or damage property.
The proposed access to the site (from Porter Road) is outside the flood plain, providing safe access to and from the site in the case of a flood event.
Due to the design and layout, including the amendment to the fencing, the proposed development is unlikely to impede the flow of any floodwaters, or cause any adverse effects on the floodway function, increase flooding of other land or obstruct a watercourse.
Bushfire
Planning policies seek development that should be situated to minimise the threat and impact of bushfire on life and property.
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The proposed development is located within a General Bushfire Risk area and is generally devoid of vegetation.
The proposal includes an access track from Porter Road that is 5m wide and incorporates a loop around the generator, pumping stations and electrical control room. Each EBS has a 5m wide access track around each side. These tracks are wide enough to allow emergency vehicles to access all sides, and exceeds planning requirements to provide an access way at least 3mwide for emergency vehicles. (Primary Production Zone PDC 15)
8.9 Waste Management
The Development Plan seeks the prevention or minimisation of waste generation through the application of the waste management hierarchy.
The Construction Environment Management Plan contains strategies related to waste management including the adoption of the waste management hierarchy, the requirement that all waste requiring offsite disposal shall be transferred to an appropriately licensed facility. It is expected that minor waste streams from the administration/control area can be disposed of through Council’s kerbside garbage collection service as required.
8.10 Orderly and Sustainable Development
The development of the EBS augments the existing NAIS in operation in the area which will assist development in the zone and policy rea for its intended use and allow for the expansion of the economic base of the region in a sustainable manner. This is consistent with the policies contained within the General Section (Orderly and Sustainable Development) of the Development plan.
9. CONCLUSION
The proposed EBS and associated infrastructure has been sited and designed to minimise its visual impact, is located within the zone and policy area it will be servicing, underpins and augments the existing NAIS infrastructure to enable economic growth and expansion of horticulture in the region.
The development is relatively low scale and will not result in a significant change to the landscape, nor will it prejudice the achievement of the Development Plan or the continuance of adjoining or surrounding authorised land users.
The incorporation of landscaping will assist to minimise visual impacts and create new vegetated areas in the area. The proposed perimeter stock fencing is in keeping with the rural nature of the region.
The greatest impacts in terms of noise, traffic generation, dust and general nuisance will be experienced during the construction period. These impacts will be temporary and can be successfully managed through a Construction Environmental Management Plan.
On balance, whist it is recognised that the development is not an envisaged form of development within the zone or policy area, it is considered that overall the development will help support the envisaged forms of development and will assist the region to grow in a sustainable manner.
Pursuant to Section 35(2) of the Development Act 1993, and having undertaken an assessment of the application against the relevant Development Plan, the application is NOT CONSIDERED to be seriously as variance with the provisions of that plan.
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If no further information is required, and all relevant assessment matters have been considered, this planning report can be endorsed by the State Commission Assessment Panel pursuant to Section 49 (7e) of the Development Act 1993, and a formal recommendation with appropriate conditions provided to the Minister for Planning for his further review and decision.
Sharon Wyatt PRINCIPAL PROJECT OFFICER DEVELOPMENT DIVISION (DPTI)
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Northern Adelaide Irrigation Scheme (NAIS) Development Application - Earth Bank Storage
Version: 1.0 Date: 29/06/18 Status: Final
© 2018 SA Water Corporation. All rights reserved. This document may contain confidential information of SA Water Corporation. Disclosure or dissemination to unauthorised individuals is strictly prohibited. Uncontrolled when printed or downloaded.
NAIS EBS Development Application SA Water
Document Controls
Version History
Version Date Author Comments 0.1 13/06/2018 Alex Czura First draft. 0.2 25/06/18 Alex Czura Final Draft 1.0 29/06/18 Alex Czura Final
Contents
1 Introduction ...... 4 1.1 Purpose ...... 4 1.2 Project Timing ...... 4
2 Project Context and Overview ...... 6
3 Project Description ...... 8 3.1 2 x 200ML Lined Above Ground Earth Bank Storage ...... 8 3.2 Reticulation Pump Station ...... 8 3.3 Back-up Diesel Generator ...... 9 3.4 Access Road and Perimeter Security Fencing ...... 9 3.5 Bird Net ...... 11 3.6 Landscaping ...... 12 3.7 Construction Works and Timing ...... 14 3.8 Construction Management ...... 14 Transport and Access ...... 15 Earth Bank Storage Material ...... 15
4 Consideration of Potential Impacts ...... 16 4.1 Site Selection ...... 16 4.2 Environmental Management ...... 17 Flora and Fauna ...... 17 Noise and Nearest Sensitive Receptor ...... 18 Visual ...... 19 Aboriginal Heritage ...... 20 European Heritage ...... 20 Air Quality – dust emissions and odour ...... 20 Traffic and Access ...... 21 4.3 Stakeholder Engagement ...... 21 EPA and SA Health ...... 21
5 Planning Considerations ...... 22 5.1 Locality and Site ...... 22 5.2 Zoning and Policy Provisions ...... 24 Version 1 Page 2 of 27 For Official Use Only Uncontrolled when printed or downloaded
NAIS EBS Development Application SA Water
Flood Zone Hazard Assessment ...... 24
6 Conclusion ...... 26
7 Appendices ...... 27
List of figures
Figure 1 General location of Proposed Development
Figure 2 Back-up Diesel generator
Figure 3: Example of SA Water 2.4m Security fencing
Figure 4: Example of SA Water 2.4m Security fencing
Figure 5: Locations considered for the EBS
Figure 6: EBS distance to nearest sensitive receptor
Figure 7: View of Site
Figure 8: EBS Locality and Site
List of Appendices
1. Certificate of Title
2. EBS Site Plan
3. EBS Cross sections
4. Tonkin Consulting hydrological assessment of Low risk Flood Zone
5. Construction Environment Management Plan
6. Traffic Management Plan
7. FMG Waste Classification report
8. SA Water NAIS Project above ground storage options Kaurna Heritage Survey 12-13 April 2018
9. Aboriginal Heritage Discovery Procedure
10. Development Application Lodged for property sub-division
11. Electricity Infrastructure Statement
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NAIS EBS Development Application SA Water
1 Introduction SA Water proposes the development of an above ground recycled water earth bank storage and a reticulation pump station in Korunye (North of Two Wells). The purpose of the proposed development is to facilitate the broader Northern Adelaide Irrigation Scheme (NAIS).
The NAIS is a private/public partnership developed by the PIRSA led Northern Adelaide Plains (NAP) Agribusiness Initiative which is seeking to expand the use of recycled water for horticultural irrigation in the NAP.
The NAP Agribusiness Initiative is a key priority of the State Government’s Northern Economic Plan, “Look North” aimed at providing an economic focus to the NAP following the closure of the automotive industry.
This development application follows on from the previously approved development for the new treatment plant, pump station and balancing storage tank (DA361/V001/18).
1.1 Purpose
This development application provides a description of the proposed development that requires approval under the Development Act 1993. A copy of the relevant Certificate of Title is contained in Appendix 1 and referred to in Section 5.1. The information is provided to the State Commission Assessment Panel (SCAP) for the purpose of a Section 49 Crown Development Application.
SA Water are seeking approval for an above ground recycled water earth bank storage and a reticulation pump station in Korunye.
It is noted that some elements of the project do not require Development approval and as such, this application does not cover those elements.
1.2 Project Timing
The project is scheduled to be operational in the second half of 2019.
The works under the approved DA361/V001/18 have commenced at the Bolivar Waste Water Treatment Plant (WWTP).
Subject to approvals being in place, it is anticipated the components of this Development application will commence early October 2018.
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NAIS EBS Development Application SA Water
Glossary
The following glossary items are used in this document: Term Description SA Water South Australian Water Corporation EPA Environment Protection Authority NAIS Northern Adelaide Irrigation Scheme WWTP Wastewater Treatment Plant NAP Northern Adelaide Plains GL Gigalitres EBS Earth Bank Storage CEMP Construction Environmental Management Plan SAPN SA Power Networks
Version 1 Page 5 of 27 For Official Use Only Uncontrolled when printed or downloaded
NAIS EBS Development Application SA Water
2 Project Context and Overview The Northern Adelaide Plains (NAP) is a very important horticultural region that presently accounts for a third of South Australia’s horticulture production. In order for the region to expand further, large volumes of affordable, high security, recycled water are required. The purpose of NAIS is to supply suitable water to support the growth of the horticultural industry.
The NAIS proposes to make available an additional 12 Gigalitres (GL) per year of treated recycled water to support commercial horticultural operations in the NAP, with a focus on the region approximately north of Two Wells.
The Bolivar wastewater treatment plant already supplies recycled water for horticultural use. This is known as the Virginia Pipeline Scheme and has been operating successfully for around 20 years.
For NAIS a new Advanced Water Recycling plant (AWRP) is needed at Bolivar to supply the volume and standard of recycled water required by the industry.
The complete NAIS comprises the following elements:
A new Advanced Water Recycling Plant (AWRP) at the Bolivar site,
A Managed Aquifer Recovery (MAR) facility at the Bolivar site,
A number of above ground small tanks at the Bolivar site,
Two Above ground recycled water earth bank storages at Korunye
Reticulation pump station at Korunye
A recycled water transfer pump station at the Bolivar site, and
A delivery trunk main and distribution networks.
Upon completion, NAIS will be capable of providing 12 GL pa for commercial food crop and some animal husbandry applications in the NAP.
This application relates to the physical works needed to facilitate the new above ground recycled water earth bank storages at Korunye and the associated Reticulation Pump Station.
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3 Project Description The following chapter outlines the development for which SA Water is seeking approval. This includes the new above ground recycled water earth bank storage at Korunye and the Reticulation pump station. The associated infrastructure includes:
- 2 x 200ML lined above ground earth bank storage
- The Reticulation pump station and associated minor infrastructure
- Access road & Perimeter Security fencing
- Bird net (If required, pending future performance of the proposed storage)
- Landscaping
3.1 2 x 200ML Lined Above Ground Earth Bank Storage
The Above ground recycled water storage will take the form of two 200ML Earth Bank Storages (EBS) with a perimeter access track at the top of the embankment. (illustrated in Appendix 2)
From a Development Act perspective, the EBS will require approx. a 587.56m m (east-west) by 300 m (north-south) parcel of land. The EBS will be located within this parcel and includes a buffer for fencing and landscaping. The south east corner of EBS will be located within flood hazard risk areas (100yr ARI flood plains) as outlined in the ‘Development Plan – Mallala Council’ (20/02/18). Tonkin Consulting have undertaken a flood hazard assessment of the EBS to ensure that the proposed development will not impede the flow or floodwater or increase the degree of flood risk to adjacent properties (Appendix 4).
Dimensions: 197.5m (internal) x 109.5m (internal) per storage
Height: Approximately 5.0 m
3.2 Reticulation Pump Station
A pump station will be built adjacent the EBS and will require a new SA Power Networks power supply to the site.
From a Development Act perspective, the reticulation pump station and associated pipework will be situated north the EBS and the associated electrical switchboard will be contained within a prefabricated building with approx. dimensions of: 8m wide x 2.4m long x 3m high (skillion roof).
The building will be constructed with a steel and concrete base and insulated sandwich panel for sound deadening and heat insulation.
Colour: Pale Eucalypt
Material: Concrete and steel.
Other details: Air conditioned with security monitoring
The Reticulation pump station will supply high quality recycled water via a 10km reticulation main to agricultural customers.
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The pump station will consist of eight low noise canned pumps to create a compact footprint. The pumps are located below ground to reduce noise and above ground footprint. The Electric motors are fitted with low noise fan covers.
The pumps will be painted pale eucalypt to match the building.
An unsealed access road will be provided between the pump station and switch room for maintenance and operation purposes.
3.3 Back-up Diesel Generator
In order to guarantee a consistent supply of water in unplanned power outages a back-up diesel generator is required to be set up on a concrete pad adjacent the proposed pump station. The Diesel generator will be 9.5m by 2.5m free standing on a concrete pad with self- contained noise attenuation.
Figure 2 illustrates an example of that the generator may look like. The generator will only be used in times of power outage and maintenance checks. The generator is fitted with a double skinned tank to prevent any diesel spillage to the environment.
Figure 2 Back-up Diesel generator
3.4 Access Road and Perimeter Security Fencing
The EBS site will be accessed via new access road from Porter road as detailed in Appendix 2. The road will be a new formed asphalt roadway 5m wide and will consist of a open swing security fenced approximately 15m in from Porter Road.
A new 2.4m SA water security fence will be installed around the permitter toe of the EBS and internal emergency fire access track. A perimeter boundary stock fence approximately 1.2m high will be installed around the property boundary. The SA Water security fence has been designed to enclose only critical infrastructure and located as close to the EBS as possible out of view of sight lines. Appendix 3 provides four example cross sections of each set back from property boundaries and is further explained below:
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Cross section for each property boundary (North, East, South & west) will consist of:
Toe of EBS batter,
5m access track,
2.4m SA Water Security fence (figure 3 example)
2-3m clear zone of no climbable landscaping
Minimum width 5-7m landscaping (see section 3.6)
1.2 stock fence on property boundary (min fence gap size >100mm)
The fence colour will be either black or grey depending stakeholder engagement discussions with the local community.
The south east of the SA Water Security fence line will intersect with the Adelaide Plains Council flood hazard risk areas (100yr ARI flood plains) as outlined in the ‘Development Plan – Mallala Council’ (20/02/18). Under section Primary Production non-complying development Fence within any of the Flood Hazard Risk Areas, as shown on Overlay Maps – Development Constraints is a non-complying development. Except where (a) or (b) is satisfied:
(a) it is located within the Low Flood Hazard Risk Area and: (i) the fencing maintains a mesh size greater than 100 millimetres between ground level and 300 millimetres; or (ii) the fence is located within 10 metres of a dwelling or other building.
(b) it is located within the Medium or High Flood Hazard Risk Areas and: (i) it is a post and wire fence with a mesh size greater than 100 millimetres; or (ii) the fence is located within 10 metres of a dwelling or other building.
SA Water have approved an exemption to our standard fencing guideline to accommodate this change to the fence type to the bottom 300mm of the proposed chain mesh fence in the south east of the proposed fence to ensure compliance with the Adelaide Plains Council Development Plan for the construction of a fence within the Low risk Adelaide Plains Council 2015 Hazard Flood Zone mapping.
Fencing construction within the flood plain will satisfy the planning controls within the development plan provided “the fencing maintains a mesh size greater than 100mm between ground level and 300mm” as per advice in the Tonkin Consulting Flood advice – NAIS EBS Korunya Site (Appendix 4).
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Figure 3: Example of SA Water 2.4m Security fencing
3.5 Bird Net
The EBS has been designed to allow the inclusion of a bird net similar to the one installed at a nearby SA Water site known as Redbanks Tank in the Hundred of Redbanks. Upon installation and operation of the EBS a site bird survey will be undertaken to determine if the EBS is causing the introduction of unwanted bird species to the primary production area. Pending the outcomes of the survey will determine if the bird net will be installed.
If the bird net is to be installed it will be installed at water level and will not be visible to the public from outside of the SA Water site. An example of the bird net can be seen in figure 4 installed at the Redbanks Tank site.
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Figure 4: Example of SA Water 2.4m Security fencing
3.6 Landscaping
The storage facility requires a high level of security fence to ensure public safety and to protect water quality. However, rather than positioning this on the property boundary, SA Water intend to set the security fence back from the perimeter to leave room for the planting of native trees and shrubs to form a screening vegetation. It is anticipated that the buffer strip will comprise at least 5 m – 7 m width comprising a diversity of plant forms which will help soften the visual impact of the both the storage and the security fence from nearby sensitive receptors, namely residents on Porter Road and Hart Road. In addition, SA Water intends to utilise local native grasses sourced from our seed production facilities to stabilize embankment soils (as used to good success in many of our recent revegetation projects).
The landscaping will likely consist of two components – a) Tree / shrub species - selected for their suitability of screening and visual amenity, drawn from broader pre-European plant lists for the area. Species will comprise a range of contrasting heights and forms to provide a naturalistic buffer strip.
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TREES
Acacia pycnantha Golden Wattle
Allocasuarina verticillata Drooping Sheoak
Callitris gracilis Southern Cypress Pine
Eucalyptus porosa Mallee Box
Melaleuca lanceolata Moonah
Pittosporum angustifolium Native Apricot
SHRUBS
Acacia acinacea Wreath Wattle
Acacia ligulata Umbrella Bush
Acacia paradoxa Kangaroo Thorn
Myoporum insulare Common Boobialla
Dodonaea viscosa ssp. spatulata Sticky Hop-Bush
Rhagodia parabolica Scented Saltbush
b) On the embankments – a selection of low-growing native grasses will be sown to form a native grasses meadow providing soil stability, drought tolerance, longevity and ease of maintenance.
SA Water would typically look to sow via hydroseeding or direct seeding with custom seed machines into a weed-free soil profile ideally in April/May 2019. A likely grass species mix would comprise a combination of both C3 and C4 grasses as follows:
NATIVE GRASSES
Rytidosperma caespitosum White-top Wallaby-grass
Rytidosperma racemosum Slender Wallaby-grass
Rytidosperma geniculatum Kneed Wallaby-grass
Austrostipa nodosa Spear-grass
Chloris truncata Windmill grass
Ennaepogon nigricans Black-head grass
SA Water will look to use local provenance sources first for all landscaping components and will work collaboratively with the Manager Horticulture Adelaide Plains Council along with SA Water Specialist – Vegetation Services.
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3.7 Construction Works and Timing
The construction phase for the proposed development of the EBS at Korunye, Lower Light will take approximately 6-8 months and are planned to commence in early October 2018. Construction activities and site works will include (but not limited to) the following:
Earthworks through cut and fill of the existing EBS site
Importation of re-use spoil from the NAIS Trunk main using semi-trailer trucks or truck and trailers
Earthworks and other civil works associated with site establishment, installation of slab and building foundations, stormwater management and vehicle access;
a large crane with outriggers may be required for certain elements of construction.
All construction materials and construction traffic will enter the site via Porters Road and parking will be accommodated on site at a designated parking area next to the site office and laydown area.
Construction of the pump station and installation of internal and external mechanical and electrical infrastructure.
Construction of the electrical switch board building
Trenching for cabling and pipelines and
New SAPN power cable to the site
3.8 Construction Management
It is anticipated that the construction phase will present the most notable potential for disruptions and impacts. While this is a limited phase, it is appreciated that construction impacts require appropriate management.
A Construction Environmental Management Plan (CEMP) has been developed by the contractor Leed Engineering in conjunction with the SA Water Environmental Manager. The CEMP addresses site specific environmental requirements for the construction of the EBS to minimise the potential impacts, the key objectives of the CEMP are to: Ensure that potential environmental or heritage risks associated with common construction activities are being considered as part of the planning and delivery of SA Water’s works
Ensure that control measures are in place to minimise potential risks and impacts
Achieve the project objectives in relation environment and heritage management
Ensure the works are undertaken in accordance with our customer’s expectations
Continually improve project/site practices for the mitigation and management of impacts
Establish clear responsibilities for environmental and heritage management as part of the works
Ensure compliance with all statutory and regulatory requirements.
A Construction Environment Management Plan is contained in Appendix 5.
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Transport and Access
During the operational phase, the proposed development will generate minimal traffic, with access only being required for monitoring and maintenance purposes. However, additional traffic will be generated during the construction phase. It is anticipated that this will take the form of standard construction vehicles/equipment, construction employee vehicles and equipment/materials delivery.
Transportation of materials to site will rely on the use of a variety of truck sizes. Due to the size of certain components, a large crane with outriggers may be required for certain elements of construction. Due to the proposed site being located in an open area and not surrounded by any buildings and obstructions the use of such vehicles during construction will not impede traffic. However, any requirements for oversized vehicles and loads getting to the EBS site location will be addressed by the respective contractors.
All construction materials and construction traffic will enter the site via Porters Road and parking will be accommodated on site at a designated parking area next to the site office and laydown area. The parking and site office area will be delineated by a temporary safety fence line to separate the area form the construction zone.
A traffic management plan for the importation of materials is provided in Appendix 6 and site access roads illustrated in appendix 2.
Earth Bank Storage Material
Prior to the construction of the EBS, the “SA Water NAIS Spoil Classification – Sampling and Assessment Program” was developed. The sampling and testing program included push tube samples being collected at various locations scattered at the footprint of the EBS, and lab tested as per the EPA waste derived fill guidelines and for the suitability of building an earth bank storage. The results found the clay suitable for the construction of an EBS and were confirmed as waste fill as per the EPA Waste derived Fill Guidelines.
The majority of the material used for the construction of the EBS will be site won through cut / fill and no material will need to be required to be disposed off-site. All the cut and fill material will be used for the construction of the EBS; in entirety.
Additional spoil created from the construction of the NAIS transfer pipeline from Chainage 18000m onwards (Gawler River) will be stockpiled at the EBS site for beneficial re-use. This spoil will be carted to the EBS site using semi-trailer trucks or truck and trailers and later be utilised for the construction of the EBS (Appendix 6 Traffic Management Plan).
Geotechnical investigations of the spoil to be brought to site have been undertaken by FMG Engineering and tested as per the EPA Waste derived Fill Guidelines. The soil sampling was undertaken as one sample per 1000m3 instead of the normal 250m3 as per the EPA Waste derived Fill Guidelines. This methodology was approved by the EPA on the 28th February 2018 as per Tonkin Consulting recommendation report dated 21 February 2018. The results confirmed the material is classified as “waste fill” and suitable for re-use for the construction of the EBS (Appendix 7). With the exception of bore 38, where a historical hydrocarbon spill at the surface for a depth of 200mm will be required to be disposed at licensed waste facility. Further sampling of the extent of hydrocarbon spill around bore 38 will be undertaken to ensure the full extent of the spill is taken to a licensed waste facility and only clean “waste fill” is brought to the EBS.
Once the EBS designs are finalised and the exact quantities of material are quantified; there may be a requirement of importing new Quarry material to overcome the deficit. This Quarry material will be sourced form SA Water approved Quarry material suppliers and NRM Board approved weed free.
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4 Consideration of Potential Impacts This project is being managed in accordance with SA Water’s Corporate Project Management Methodology by a senior project manager from SA Water’s Delivery Group. This ensures that all relevant approvals, permits, licences and conformance requirements will be addressed in a comprehensive manner. This includes addressing Work, Health and Safety, Environment and Heritage Management, and Stakeholders Engagement issues.
The NAIS proposes to make available an additional 12 Gigalitres (GL) per year of treated recycled water to support commercial horticultural operations in the NAP, with a focus on the region approximately north of Two Wells in the primary production zone.
4.1 Site Selection
The site selection process considered a number of factors impacting on the final design and development. A number of environmental and technical investigations have informed considerations in relation to the proposed location of infrastructure. This included, proximity to potential agriculture businesses, the Adelaide Plains Council Flood zone hazard mapping, proximity to sensitive receptors, soil suitability, minimising impact to native vegetation and no impact to Aboriginal Heritage sites.
Three sites were considered for the EBS storage and each site undertook geotechnical investigations, land owner negotiations, native vegetation and aboriginal heritage assessments. The investigations were intended to identify a representative soil stratigraphy and minimise impacts on the receiving environment, whilst complying with relevant legislation.
Figure 5 illustrates the proposed locations of the EBS in relation the proposed transfer trunk main (illustrated in white). Site 1 is positioned approximately 5km north-west of Two Wells at the corner of Hart and Porter Roads. Site 2 is positioned approximately 3km south of Two Wells at the corner of Buckland Park Road and Bailey West Road. Site 3 is positioned on the northern bank of Gawler River approximately 500m east of Baker Road. All sites consisted of predominantly farm land with limited native vegetation remaining; Site 3 was the least preferred by the Aboriginal Heritage assessment due to potential impacts associated with the Gawler River (advice detailed in Appendix 8).
Site 1 has been chosen due to its suitability of geotechnical investigations for soil type, being outside of the majority of the flood zone, suitability of proximity in the primary production zone, land holder negotiations and the site has been heavily disturbed with minimal presence of remaining native vegetation.
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Figure 5: Locations considered for the EBS
4.2 Environmental Management
Flora and Fauna
A survey of the EBS location has been undertaken by SA Water Environmental Manager and found no areas of native vegetation present within the EBS Site. Some scattered native vegetation amongst a predominant weed understory was found on Porter Road. SA Water has engaged EBS Ecology to undertake a vegetation survey of the EBS site, the surrounding roads (Porter and Hart Rd) and the remaining 5km of pipeline from Port Wakefield Rd to bring the recycled water to the site. Two pipeline options were considered, the other being in the road shoulder of Port Wakefield Rd however this included significant vegetation removal and safety implications during the construction and operation of the pipeline in the road corridor.
The on-ground assessments of native vegetation will confirm any impacts to native vegetation and the presence / absence of species of conservation significance are present. A Native Vegetation offset may be required for the removal of some roadside vegetation. A significant portion of the pipeline to and from the EBS will be constructed in roads to avoid areas of roadside native vegetation. If flora and fauna of conservation significance are present vegetation management measures will be required to be implemented during construction to protect high value native vegetation.
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Noise and Nearest Sensitive Receptor
It is anticipated that the construction phase will present the most potential for noise. Most noticeable will be machinery use within the EBS site during the cutting/filling process and the importation of re-use spoil. While this is a limited phase, it is appreciated that construction impacts require appropriate management. Vehicles will be fitted with squawkers to avoid noisy reversing on public roads and a site specific stakeholder engagement plan has been developed with the adjoining neighbours to ensure they are kept informed of the planned works.
SA Water have worked collaboratively with the existing land holder to sub-divide their property prior to SA Water purchase allowing the EBS to be constructed on the middle land parcel to maximise the use of available buffer land to the adjoining residents (whilst keeping out of the flood zone where possible). This has allowed a buffer distance of around 240m from the southern property boundary at Hart Rd. This property is situated closer to Port Wakefield Road main traffic route (220m) and is more likely to experience noise from the road than the EBS works. The property to the east of the EBS is on the other side of Porter road 130m from the south eastern boundary of the EBS with an existing shed and screening vegetation present (illustrated in figure 6).
The EBS has been designed on the new land parcel as far north west as possible to allow greater buffer space for adjoining properties, minimise impacts on the flood zone while allowing space for associated ancillary infrastructure on the north of the property.
The associated ancillary infrastructure consists of a pump station, electrical switchboard building and a backup diesel generator and is required to pump recycled water to the agriculture businesses only during unforeseen power outages. This infrastructure has been positioned north of the EBS to provide the largest buffer distance possible to the adjoining residents, keeps the infrastructure out of lines of sight and allows the EBS itself to act as additional noise attenuation (5m high). Figure 6 below illustrates the location of the pump station and diesel generator in relation to the nearest sensitive receptor. This associated infrastructure is 480m from both Hart Rd and Porter Road sensitive receptors.
The pumps required for the distribution of water from the EBS to the required customers is not yet confirmed as the extent of reticulation main has not yet been designed. The back- up diesel generator will be only required during power outages or routine quality testing. The generators are a self-contained unit as per Figure 2 and have in-built noise attenuation devices in the unit. The pump noise output and diesel generator will be measured as per the EPA noise attenuation guidelines; however it is expected to be a low risk due to equipment type chosen, pumps being underground and the distance of almost 500m to the nearest receptor. Contingencies for noise attenuation screens have been allowed for and will be installed if required.
Consideration of the potential risk in mosquito/midge flies and algae growth associated with the construction of the EBS was considered. The risk was identified early in the project phase and will be managed by the ability to raise and lower the water level of the two compartments of the EBS. The EBS will be treated as a “balancing storage” rather than a storage of water. As such the NAIS Trunk main will “fill” the EBS as required and the reticulation pumps will draw down the water level to customer supply. This constant filling and drawing down water level significantly reduces the risk of pest insects and algae growth. This fluctuation of water level will be a key function of the operational management plan of the EBS and the presence of mosquito or midge flies and algae growth will continue to be monitored during the operational phase of the EBS. SA Water have a number of tried and proven methods to control both pest insect species and significant algae growth through physical and chemical interaction if required.
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On this basis it is considered that the proposed development both during construction and operation will not adversely impact the neighbouring properties.
Figure 6: EBS distance to nearest sensitive receptor
Visual
The proposed site is positioned approximately 5km north-west of Two Wells at the corner of Hart and Porter Roads. The associated ancillary infrastructure has been positioned north of the EBS to provide the largest buffer distance possible to the adjoining residents (480m) and is not visible from the nearby sensitive receptors. The security fence location has been positioned set back from the property boundary. SA Water have committed to the local residents to a landscaping program both around the permitter of the EBS site and native grass on the banks of the EBS as per section 3.6.
Appendix 3 details the cross section view from each boundary illustrating the location of boundary stock fence and a minimum width of 5-7m landscaping prior to the installation of the 2.4m SA Water Security fence.
It is considered that the EBS and associated ancillary infrastructure is sufficiently removed from property boundaries and sight lines and the proposed landscaping plan will not result in negative visual affects to adjoining sensitive receptors.
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Aboriginal Heritage
A desktop review of the study area including AAR register searches has identified no sites within the EBS or associated pipelines. On the 12th – 13th April 2018, Neale Draper and Associates undertook a cultural Heritage survey with Kaurna at the proposed EBS location. The results of the survey were that no areas or objects of Aboriginal archaeological or cultural significance were encountered in the above ground storage area. Appendix 8 details a letter summarising the outcomes of the site survey and recommendations to choose the EBS location not adjacent the Gawler River (Site 3 in section 4.1).
A NAIS Cultural Heritage Management Plan and site specific Aboriginal Heritage Discovery Flow chart has been developed for the project and will be utilised for the Construction of the EBS (Appendix 9). SA Water has worked collaboratively with Kaurna throughout all stages of the NAIS Project. Kaurna have been engaged to undertake monitoring of high risk area identified in the NAIS Cultural Heritage Management Plan. The EBS location has been identified as a low risk in this plan and no monitoring is required during the proposed construction of the EBS.
A Native Title assessment of the Earth Banks Storage site (CT 5662/19) by the Crown Solicitors office confirmed Native title has been extinguished by a valid grant in fee simple (prior to 1994) and once extinguished cannot be revived.
European Heritage
There are no listed items of European heritage in the vicinity of the proposed development.
Air Quality – dust emissions and odour
Construction works have the potential to impact local air quality particularly associated with dust generated during ground disturbing activities and management of stockpiles. Emissions may also be associated with the use of construction and other heavy vehicles. Such impacts will be diffused using site designated water truck to suppress the dust at the EBS Site and heavy traffic area (such as new access tracks); throughout the construction period.
Given the existing site use and distance to nearest sensitive receptors it is considered with the implementation of a Construction Environmental Management Plan (Appendix 5) controls there will be minimal impacts on local air quality. Regular assessment of the site weather conditions including wind direction and strength will be undertaken at daily tool box meetings to determine the risk to the adjoining public roads and nearby sensitive receptors. If dust cannot be adequately controlled by water cart suppression and is causing reduced visibility or public nuisance works causing dust will cease until cleared of further impacts. A stakeholder engagement plan has been developed with the adjoining neighbours to ensure they are kept informed of the planned works.
During the operational phase the proposed development is expected to have negligible impacts on air quality. Dust emissions will be low due to aspects such as roads being comprised of hard surfaces and no increase to vehicle movements as the site will be un- maned with weekly site inspections only. Native vegetation landscaping on the EBS batters and site perimeter will also assist in soil stability.
The potential for odour impacts to the surrounding locality as a result of the development is considered very low. There are no components in the EBS that will likely cause odour as the EBS is sourced from post the waste water treatment of the Bolivar site and is high quality recycled water.
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Traffic and Access
All construction materials and construction traffic will enter the site via Porters Road and parking will be accommodated on site at a designated parking area next to the site office and laydown area. It is noted that the construction phase of the development is likely to result in increased traffic along Porters Road; from where the EBS site will be accessed. Some management of construction vehicles is anticipated to minimise impacts on local roads.
Design considerations have been made keeping traffic in perspective, with the majority of works being undertaken on site derived new access roads. The majority of the construction material for the EBS will be site won from Cut and Fill; this will minimise carting material to site, reducing construction traffic and obstructions for local traffic.
A traffic management plan for the importation of materials is provided in Appendix 6 and site access roads illustrated in appendix 2.
4.3 Stakeholder Engagement
SA Water commenced engagement with surrounding property owners in Korunye during the site selection investigation period in April 2018. Concept illustrations of the EBS were shown to the residents during the initial consultation period for discussion. Feedback received during these discussions has been included in the final concept drawings in Figure 6 and attached in Appendix 2 of this Development Application.
The concept design incorporates a number of visual amenity considerations as a result of the community discussions including; vegetation screening, alterations to SA Water standard security fencing, stock fencing the outer perimeter, native grass vegetation on the embankments and location of the pumps and generator.
Ongoing community engagement with property owners affected by the installation of the new recycled water pipe and the construction of the EBS will continue throughout the life of the project.
Wider consultation with the Northern Adelaide Plains (NAP) community including community information sessions and the establishment of a NAIS Community Committee has been occurring since 2015. The discussions and feedback received from the NAP community has been an integral component during the planning and construction phase of the project.
EPA and SA Health
SA Water has met with the EPA and SA Health. No major concerns were raised regarding the NAIS project. We continue to work with the EPA and SA Health as the project progresses.
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5 Planning Considerations The site of the proposed development is located within the City of Adelaide Plains, accordingly the City of Adelaide Plains Development Plan (consolidated 20 February 2018) is the relevant Development Plan. The subject site is situated approximately 5km north-west of Two Wells at the corner of Hart and Porter Roads approximately 400m east of Port Wakefield Rd, in the area named Korunye, Hundred of Port Gawler.
The proposed development will involve the construction of an Earth Bank Storage and ancillary infrastructure for the reticulation of recycled water to develop the Northern Adelaide Plains agricultural businesses within the area zoned as Primary Production.
It is considered that the distance of the proposed development from the adjacent land uses, mitigation measures taken to reduce visual and operational impacts and proposed landscaping negates any issues relating to visual amenity or noise associated with the construction or ongoing operation of the EBS.
5.1 Locality and Site
The subject site is located in the area named Korunye, Hundred of Port Gawler CT 5662/19 (parent title CT 3169/116 Appendix 1). The proposed site is positioned approximately 5km north-west of Two Wells at the corner of Hart and Porter Roads. The proposed site for development is located within the Adelaide plains primary production area.
The subject site is entirely located within current allotment 118 filed plan 216939, being portion of CT 5662/19. A separate land division application under SCAP ID #312 / G016 / 18 to create 3 new allotments has been previously submitted and is awaiting approval (Appendix 10). This allows SA Water to purchase the middle allotment (proposed allotment 1) leaving the existing surrounding property to the land holder for primary production use and maximises the buffer space from adjoining sensitive receptors.
Consideration has been given to the nature of the locality within which the site is located. The site and locality are indicated on Figure 1 and view of the site in figure 7. The site was chosen due to its suitability of geotechnical investigations for soil type, being outside of the majority of the flood zone, suitability of proximity in the primary production zone, customer negotiations and the site has been heavily disturbed with minimal presence of remaining native vegetation. The proposed site is currently used as farming land, more specifically as sheep grazing. As such, the proposed development site is flat and devoid of vegetation. The site is located approximately 130m from the nearest sensitive receptor which is on Porter Rd.
The associated ancillary infrastructure has been positioned north of the EBS to provide the largest buffer distance possible to the adjoining residents (480m) and is not visible from the nearby sensitive receptors. The security fence location has been positioned set back from the property boundary. SA Water have committed to the local residents to a landscaping plan both around the permitter of the EBS site and native grass on the banks of the EBS as per section 3.6.
Appendix 3 details the cross section view from each boundary illustrating the location of boundary stock fence and a minimum width of 5-7m landscaping prior to the installation of the 2.4m SA Water Security fence. It is considered that the EBS and associated ancillary infrastructure is sufficiently removed from property boundaries and sight lines and the proposed landscaping plan will not result in negative visual affects to adjoining sensitive receptors.
The broader locality is that of the area mainly cleared for primary production and as such the proposed EBS will further support the agriculture businesses production to develop economic growth within the Northern Adelaide Plains.
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Figure 6: EBS Locality and Site
Figure 7: View of Site
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5.2 Zoning and Policy Provisions
The subject site is located within the primary production Zone of the City of Adelaide Plains Development Plan (consolidated 20 February 2018). The locality is depicted on Zone Map Zone Map Mal/8.
The proposed development is considered an extension and further development of the existing primary production zone. Land Use provisions within the zone envisaged for primary production uses.
The Objectives of the Primary production area are:
1 The long term continuation of primary production.
2 Economically productive, efficient and environmentally sustainable primary production.
3 Allotments of a size and configuration that promote the efficient use of land for primary production.
4 Protection of primary production from encroachment by incompatible land uses and protection of scenic qualities of rural landscapes.
5 Accommodation of wind farms and ancillary development.
6. Protection of rural support infrastructure for the bulk handling, storage and transportation of farm commodities situated at Long Plains and south west of the Mallala Township.
7 Development that contributes to the desired character of the zone.
The NAIS is a private/public partnership developed by the PIRSA led Northern Adelaide Plains (NAP) Agribusiness Initiative which is seeking to expand the use of recycled water for horticultural irrigation in the Northern Adelaide Plains primary production area to support the objectives of development control.
The primary production principles of development control states:
15 Development should provide an access way of at least 3 metres wide that provides access for emergency vehicles to the rear of the allotment.
The Site plan illustrates a formal access track from Porter road (of 5 metres wide) to the top of the EBS perimeter as well as an emergency informal access track surrounding the toe of the EBS Batter of 5 metres wide (Appendix 2).
Flood Zone Hazard Assessment
The primary production principals of development control states:
14 Building development should be located, designed and sufficiently elevated having regard to the flood potential of the land, particularly when located in proximity to the Light River and Gawler River.
The EBS site is partially situated within the 2015 Adelaide Plains Council flood hazard risk areas (100yr ARI flood plains) as outlined in the ‘Development Plan – Mallala Council’ (20/02/18). Appendix 4 Tonkin Consulting Flood advice – NAIS ENS Korunya Site illustrates an overlap of the EBS site and a supporting hydrological assessment confirmed the construction of the EBS will not cause additional flooding to the adjoining residents.
“Based on our assessment we have concluded that:
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NAIS EBS Development Application SA Water
The proposed filling associated with the EBS construction will not encroach on a ‘High Flood Hazard Risk Area’ and can be undertaken without increasing the flood risk for the surrounding area during a 100yr ARI flood event.”
The south east of the SA Water Security fence line will intersect with the Adelaide Plains Council flood hazard risk areas (100yr ARI flood plains) as outlined in the ‘Development Plan – Mallala Council’ (20/02/18). Under section Primary Production non-complying development Fence within any of the Flood Hazard Risk Areas, as shown on Overlay Maps – Development Constraints is a non-complying development. Except where (a) or (b) is satisfied:
(a) it is located within the Low Flood Hazard Risk Area and: (i) the fencing maintains a mesh size greater than 100 millimetres between ground level and 300 millimetres; or (ii) the fence is located within 10 metres of a dwelling or other building.
(b) it is located within the Medium or High Flood Hazard Risk Areas and: (i) it is a post and wire fence with a mesh size greater than 100 millimetres; or (ii) the fence is located within 10 metres of a dwelling or other building.
SA Water have approved an exemption to our standard fencing guideline to accommodate this change to the fence type to the bottom 300mm of the proposed chain mesh fence in the south east of the proposed fence to ensure compliance with the Adelaide Plains Council Development Plan for the construction of a fence within the Low risk Adelaide Plains Council 2015 Hazard Flood Zone mapping.
Fencing construction within the flood plain will satisfy the planning controls within the development plan provided “the fencing maintains a mesh size greater than 100mm between ground level and 300mm” as per advice in the Tonkin Consulting Flood advice – NAIS EBS Korunya Site (Appendix 4).
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NAIS EBS Development Application SA Water
6 Conclusion The Northern Adelaide Plains (NAP) is a very important horticultural region that presently accounts for a third of South Australia’s horticulture production. In order for the region to expand further, large volumes of affordable, high security, recycled water are required. The purpose of NAIS is to supply suitable water to support the growth of the horticultural industry.
When completed the NAIS has the potential to provide an additional 12GL of recycled water to be used in the NAP for agricultural use. The infrastructure proposed for construction is consistent with the existing land use and has been sited as to not impact on the surrounding locality. Additional underground pipeline infrastructure required for connection to the NAP does not require development approval.
The proposed development will be undertaken within the existing primary production area to support the creation of NAP Agricultural business. Analysis of the Adelaide Plains Council’s Development Plans indicates that the proposal is not at variance to the principles and objectives therein for the relevant zone and policy areas.
The EBS and associated ancillary infrastructure has undergone careful site selection and configuration to ensure no impacts to the sensitive receptors during both the construction and operation. The EBS is sufficiently removed from property boundaries and sight lines and the proposed landscaping plan will not result in negative visual affects to adjoining sensitive receptors.
On this basis, the proposed development is considered to warrant planning consent with appropriate conditions that address any impacts.
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NAIS EBS Development Application SA Water
7 Appendices 1. Certificate of Title
2. EBS Site Plan
3. EBS Cross sections
4. Tonkin Consulting hydrological assessment of Low risk Flood Zone
5. Construction Environment Management Plan
6. Traffic Management Plan
7. FMG Waste Classification report
8. SA Water NAIS Project above ground storage options Kaurna Heritage Survey 12-13 April 2018
9. Aboriginal Heritage Discovery Procedure
10. Development Application Lodged for property sub-division
11. Electricity Infrastructure Statement
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Product Register Search (CT 5662/19) Date/Time 18/01/2018 02:18PM Customer Reference NAIS Order ID 20180118007361 Cost $38.25
The Registrar-General certifies that this Title Register Search displays the records maintained in the Register Book and other notations at the time of searching.
Certificate of Title - Volume 5662 Folio 19 Parent Title(s) CT 3139/116 Creating Dealing(s) CONVERTED TITLE Title Issued 11/06/1999 Edition 2 Edition Issued 08/10/2001 Estate Type FEE SIMPLE Registered Proprietor H. B. GORDON & SON PTY. LTD. (ACN: 007 604 499) OF LOWER LIGHT SA 5501 Description of Land ALLOTMENTS 115, 116, 117 AND 118 FILED PLAN 216939 IN THE AREA NAMED KORUNYE HUNDRED OF PORT GAWLER Easements NIL Schedule of Dealings NIL Notations Dealings Affecting Title NIL Priority Notices NIL Notations on Plan NIL Registrar-General's Notes CONTROLLED ACCESS ROAD VIDE PLAN 54 COMPARE ADDRESS FOR SERVICE OF NOTICE WITH 2628825 Administrative Interests NIL
Land Services Page 1 of 2 Copyright Privacy Disclaimer: www.sailis.sa.gov.au/home/showCopyright www.sailis.sa.gov.au/home/showPrivacyStatement www.sailis.sa.gov.au/home/showDisclaimer Product Register Search (CT 5662/19) Date/Time 18/01/2018 02:18PM Customer Reference NAIS Order ID 20180118007361 Cost $38.25
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Valuation Record Valuation Number 3104431052 Type Site & Capital Value Date of Valuation 01/01/2017 Status CURRENT Operative From 01/07/2006 Property Location Lot 115 CHURCH ROAD, KORUNYE, SA 5502 Local Government ADELAIDE PLAINS Title References CT 5662/19 Owner Names H.B. GORDON & SON PTY. LTD. Owner Number 70534008 Address for Notices LOWER LIGHT 5501 Zone / Policy / Precinct PRPRO - Primary Production\\ Water Available No Sewer Available No Land Use 9150 - Cereals And Sheep Description L Local Government Primary Production Description Parcels
Plan/Parcel Title Reference(s) F216939 Allotment 117 CT 5662/19 F216939 Allotment 115 CT 5662/19 F216939 Allotment 118 CT 5662/19 F216939 Allotment 116 CT 5662/19
Values
Financial Year Site Value Capital Value Notional Site Notional Capital Notional Type Value Value Current $510,000 $530,000 $375,000 $390,000 Primary Production Previous $510,000 $530,000 $375,000 $390,000 Primary Production
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A U
S S T O U
R A T
L H I A
20180202L002A\EAJ\TAK
29 June 2018
Leed Valoriza Joint Venture C/-Leed Engineering and Construction Pty Ltd 95 King William Street KENT TOWN SA 5067
Attention: Ian Blinco
Dear Ian
FLOOD ADVICE – NAIS EBS KORUNYE SITE As requested we have undertaken an assessment of the flooding impact associated with the proposed Earth Bank Storages (EBS) construction at the Korunye Site (Site 1, as identified in Technical Memo 6, Rev B) and report our findings as follows. Background The site is located within a ‘Primary Production’ area (as defined in the ‘Development Plan – Mallala Council’, dated 20/02/18). The site is currently used for grazing and cropping. It is proposed to subdivide the site into three land parcels and construct an EBS across the central land parcel (as highlighted in the attached Figure 1). The EBS will extend approximately 5 m above natural surface levels. As a portion of the EBS, near the south- eastern corner, will extend into the 100yr Average Recurrence Interval (ARI) flood plain, an assessment of the impacts of the development upon floodwaters is required. This report has been prepared to assess the impact of filling on flood extents and levels. Council Requirements The Adelaide Plains Council has adopted a ‘100yr ARI standard’ for the planning of new development within flood hazard risk areas (100yr ARI flood plains) as outlined in the ‘Development Plan – Mallala Council’ (20/02/18). Planning controls are generally implemented to ensure that: Filling and/or excavation of land is not undertaken within a ‘High Flood Hazard Risk Area’. Development does not act to impede the flow of floodwater and increase the degree of flood risk to adjacent properties. Fencing within any ‘Flood Hazard Risk Areas’ is in accordance with the exceptions listed within the development plan. The proposed new EBS development in Korunye has been assessed in relation to the above requirements. Hydrology Flow data from the flood plain mapping of the area undertaken by AWE as part of the Gawler River Floodplain Mapping Study (2016) was not available for the site. Given this, the 100yr ARI flow rate through the site has been approximated by calibrating flood levels within the HEC-RAS model to the extents shown
TONKIN CONSULTING ABN 67 606 247 876 ACN 606 247 876. W www.tonkin.com.au
Adelaide Berri Darwin Mt Gambier Queensland Mildura Level 2, 66 Rundle Street 6 Kay Avenue, PO Box 2248 Unit 34, 16 Charlton Court 3-5 Helen Street, PO Box 1192 Unit 2I, 2-4 Flinders Parade 97 Pine Avenue Kent Town SA 5067 Berri SA 5343 Woolner NT 0820 Mt Gambier SA 5290 North Lakes QLD 4509 Mildura VIC 3500 T +61 8 8273 3100 F +61 8 8273 3110 T +61 8 8582 2700 F +61 8 8582 2777 T +61 8 8981 7155 F +61 8 8981 7455 T +61 8 8723 5002 F +61 8 8723 5004 T +61 7 3886 1394 F +61 8 8273 3110 T +61 8 8582 2700 F +61 8 8273 3110 E [email protected] E [email protected] E [email protected] E [email protected] E [email protected] E [email protected]
Development │ Environment │ Local Government │ Mining & Resources │ Spatial │ Transport │ Water 1
in the AWE flood mapping. This study estimated the 100yr ARI peak flow rate through the site to be 10.0m3/s. Hydraulic Assessment Based on the relatively well defined 1D flow path between Porter Road and Hart Road (immediately to the south of the EBS) a 1D HEC-RAS model was deemed to be an appropriate tool to assess the potential flood impact of the EBS. In order to assess the impact of the EBS on the 100yr ARI flood plain a HEC-RAS hydraulic model of the site between Hart Road and Porter Road was constructed. The model incorporated 8 representative cross sections of the natural surface which were extracted from a ground survey of site carried out by Engineering Surveys Pty. Ltd., dated 12/06/18. The location of each cross section is shown in Figure 1. A Manning’s roughness coefficient of 0.035 was used in the modelling based on a visual inspection of the site. An existing model was first prepared to calibrate the 100yr ARI peak flow rate such that flooding extent closely matched the AWE flood mapping. The proposed EBS construction was then incorporated into the model as a blocked obstruction within sections 4-7. The modelling results show that the encroachment of the EBS is on the periphery of the flood plain where the water depth is shallow ranging from 100–150mm, and results in a negligible increase in flood levels (less than 5mm) through the site and reduces to no impact upstream near Porter Road. Assessment of the AWE flood plain maps also indicates that the extent of the EBS encroachment is within a ‘Low Flood Hazard Risk Area’. Conclusion Based on our assessment we have concluded that: The proposed filling associated with the EBS construction will not encroach on a ‘High Flood Hazard Risk Area’ and can be undertaken without increasing the flood risk for the surrounding area during a 100yr ARI flood event. Fencing construction within the flood plain will satisfy the planning controls within the development plan provided “the fencing maintains a mesh size greater than 100mm between ground level and 300mm”. If you have any queries about the above, please contact Ben Staniford on 8273 3100
Yours faithfully TONKIN CONSULTING
BS STANIFORD, MIEAust Chartered Professional Engineer
Enc Figure 1 – Site Plan HEC-RAS Outputs Flood Risk Statement
2 Porter Road
Toe of EBS batter
Flow Direction
Hart Road
EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 Proposed Development River 1 Reach 1 12.6 Legend
WS PF 1 - EBS Obstruction WS PF 1 - Existing Crit PF 1 - EBS Obstruction Crit PF 1 - Existing 12.4 Ground LOB
12.2 Elevation (m)
12.0
11.8
11.6 0 100 200 300 400 500 Main Channel Distance (m)
EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 RS = 8 Proposed Development .035 Legend
12.75 WS PF 1 - EBS Obstruction
12.70 WS PF 1 - Existing Crit PF 1 - EBS Obstruction 12.65 Crit PF 1 - Existing 12.60 Ground
Elevation (m) 12.55 Bank Sta
12.50
12.45
12.40 0 50 100 150 200 250 300 Station (m) EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 RS = 7 Proposed Development .035 13.0 Legend
12.9 WS PF 1 - Existing WS PF 1 - EBS Obstruction 12.8 Ground 12.7 Bank Sta
12.6 Elevation (m) 12.5
12.4
12.3 0 50 100 150 200 250 300 Station (m) EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 RS = 6 Proposed Development .035 13.0 Legend
WS PF 1 - Existing
12.8 WS PF 1 - EBS Obstruction Ground Bank Sta 12.6 Elevation (m)
12.4
12.2 0 50 100 150 200 250 300 Station (m)
EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 RS = 5 Proposed Development .035 13.0 Legend
WS PF 1 - Existing 12.8 WS PF 1 - EBS Obstruction Ground 12.6 Bank Sta
12.4 Elevation (m)
12.2
0 50 100 150 200 250 300 Station (m) EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 RS = 4 Proposed Development .035 13.0 Legend
WS PF 1 - EBS Obstruction 12.8 WS PF 1 - Existing Ground 12.6 Bank Sta
12.4 Elevation (m)
12.2
12.0 0 50 100 150 200 250 300 Station (m) EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 RS = 3 Proposed Development .035 12.6 Legend
WS PF 1 - EBS Obstruction 12.5 WS PF 1 - Existing 12.4 Ground Bank Sta 12.3
Elevation (m) 12.2
12.1
12.0 0 50 100 150 200 250 300 350 Station (m)
EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 RS = 2 Proposed Development .035 12.3 Legend
WS PF 1 - EBS Obstruction 12.2 WS PF 1 - Existing Ground 12.1 Bank Sta
12.0 Elevation (m)
11.9
11.8 0 50 100 150 200 250 300 350 400 Station (m) EBS Flood Assessment Plan: 1) EBS Obstruction 28/06/2018 2) Existing 28/06/2018 RS = 1 Proposed Development .035 12.2 Legend
WS PF 1 - EBS Obstruction 12.1 WS PF 1 - Existing Crit PF 1 - EBS Obstruction 12.0 Crit PF 1 - Existing
Ground 11.9 Elevation (m) Bank Sta
11.8
11.7 0 50 100 150 200 250 300 350 400 Station (m)
Flood Risk Statement
This statement forms part of, and is to be read in conjunction with, all flood reports and flood related data provided by Tonkin Consulting. Use of the flood reports and flood related data is conditional upon acceptance of this statement.
1. Flood risk is conventionally expressed in terms of Average Recurrence Interval which is the average or expected value of the period between exceedances of a given flood. For example, a flood with an average recurrence interval of 100 years: − is expected to be exceeded on average once in 100 years – a 1% probability of being exceeded in any given year − is expected to be exceeded at random - at a time which may be within any year of the 100 year interval, or not within the 100 year interval, or it may occur more than once in the 100 year interval. 2. The risk of inundation by flood is not eliminated, when the protection is based on specific Average Recurrence Interval criteria as exceedance of a flood of a specific Average Recurrence Interval is statistically inevitable. 3. Whilst care is taken to maximise the confidence in the predicability of flood risk, a degree of uncertainty is unavoidable. 4. Variations may occur, in the future, to the climate, catchment, watercourse or flood plain which could vary the flood risk. 5. The choice of the level of risk could consider, amongst others, the following factors: − likely damages and inconvenience − cost and time for replacement and repairs − type and use of the structure − access and safety during a flood − flood insurance cost and availability − intended life cycle of the structure − attitude of the owners of the structure to the acceptance of risk − the cost, practicality and environmental impact of reducing the risk further. 6. Denoted flood levels relate to predicted average water levels. FREEBOARD above a flood level, where noted, is an allowance for expected elevations of actual water levels, due to local disturbances, wave action and other causes, above the average water level, and is NOT A FACTOR OF SAFETY ALLOWANCE. 7. The flood report and data are the property of the client and the client shall determine and accept responsibility for the distribution of the report to others. Further explanation of matters relating to flood risk is offered if required.
Flood Risk Statement.doc Revision: B Date: 23/11/09 Page 1
Construction Environmental Management Plan
Northern Adelaide Irrigation Scheme NAIS3 Earthen Bank Storages – Two Wells
Contract No: CW8125B Document No: LVJV-G1-Q-PLN-0007
Leed Engineering and Construction Pty Ltd ABN 35*097*021 728
Copy No. Version Registered Holder Location 1 B Leed Engineering & Construction Site Office
Version Date Author Reviewer Reviewer 0 18/06/2018 J.Bhalla A.Czura J. Mitchell B 27/06/2018 J. Bhalla A. Czura J. Mitchell
Function Position Name Signature Date Endorsed and issued for use Project Manager Jason Mitchell
Leed Engineering and Construction Pty Ltd (Leed) 2016 The Leed-Valoriza JV will work underneath Leed’s Quality, Safety and Environmental Standards Copyright in the drawings, information and data recorded in this document (the information) is the property of Leed. This document and the information are solely for the use of the authorised recipient and this document may not be used, copied or reproduced in whole or part for any purpose other than that for which it was supplied by Leed. Leed makes no representation, undertakes no duty and accepts no responsibility to any third party who may use or rely upon this document or the information. The electronic version of this document is the master copy and is a controlled document. Unless specifically noted, hard copies of this document are uncontrolled LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
TABLE OF CONTENTS
1. BACKGROUND ...... 4 2. OBJECTIVES OF THE CONSTRUCTION ENVIRONMENTAL MANAGEMENT PLAN (CEMP) ...... 4 3. KEY LEGISLATIVE REQUIREMENTS ...... 4 4. ENVIRONMENTAL MANAGEMENT SYSTEM AND STRUCTURE ...... 8 Environmental system requirements ...... 8 Inductions and Training ...... 8 Records and record keeping ...... 8 Roles and Responsibilities ...... 9 Project Manager ...... 9 Site Supervisor 9 Employees, sub-contractors and Labour hire personnel ...... 9 Inspections and Monitoring of Environmental Performance ...... 10 Audits 11 Non-conformance and Corrective Action ...... 11 Environmental Performnace Statistics and Reporting ...... 11 Review 12 5. ENVIRONMENTAL CONSIDERATIONS ...... 12 Flora and Fauna ...... 12 Air Quality and Dust Suppression ...... 12 Soil Classification and Testing ...... 13 Spoil Stockpile ...... 14 Refueling ...... 14 6. HERITAGE CONSIDERATIONS ...... 14 7. SOIL EROSION DRAINAGE MANAGEMENT ...... 14 EBS Site – Including Site Compound ...... 14 Dewatering ...... 15 Waterways ...... 16 8. EMERGENCY RESPONSE AND ENVIRONMENTAL INCIDENTS ...... 16 Emergency Planning, Preparedness and Response ...... 16 Environmental Incident Management ...... 16 9. APPENDIX 1 – ENVIRONMENT AND SUSTAINABILITY POLICY ...... 17
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
10. APPENDIX 2 – ENVIRONMENTAL MANAGEMENT CONTROLS ...... 18 11. APPENDIX 3 – INCIDENT RESPONSE AND EMERGENCY CONTACTS ...... 26 12. APPENDIX 4 KEY ENVIRONMENTAL CONTACTS ...... 27 13. APPENDIX 5 LOCALITY MAP ...... 28 14. APPENDIX 6 - ABORIGINAL HERITAGE ...... 29 15. APPENDIX 7 - ENVIRONEMNTAL CHECKLIST/INSPECTION ...... 33 16. APPENDIX 8 - TRAFFIC MANAGEMENT PLAN ...... 35
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
1. BACKGROUND
The Northern Adelaide Irrigation Scheme (NAIS) will deliver high quality, climate-independent reclaimed water for agrifood production and export to national or international markets. This project will deliver reclaimed water suitable for commercial food production. NAIS infrastructure will treat, store, and transport climate- and season-independent water to the farm gate under pressure. The new infrastructure requirements can be summarised as follows: - Advanced Wastewater Recycling Plant - Recycled Water Transfer Pump Station - 30km of 675mm GRP transfer pipeline - Five creek crossings - Port Wakefield Road crossing - Two 200ML above ground storage lagoons (Location: corner of Porters Road and Hart Road; Lower Light, SA) - 10km of 450mm PVC reticulation main, with customer offtakes
2. OBJECTIVES OF THE CONSTRUCTION ENVIRONMENTAL MANAGEMENT PLAN (CEMP)
The general objectives of this CEMP are to: Ensure that potential environmental or heritage risks associated with common construction activities are considered as part of the planning and delivery of works Ensure that control measures are in place to minimise potential risks and impacts Achieve the project objectives in relation environment and heritage management Ensure the works are undertaken in accordance with our client’s expectations Continually improve project/site practices for the mitigation and management of impacts Establish clear responsibilities for environmental and heritage management as part of the works Ensure compliance with all statutory and regulatory requirements.
3. KEY LEGISLATIVE REQUIREMENTS
A summary of the environment and heritage approval / permits associated with the project is provided below.
Legislation Description Approving Authority Indicative Assessment and Approval Timeframes Commonwealth Environment Sets legal framework for protecting Matters of Commonwealth From the initial desktop assessment Protection and National Environmental Significance Minister for (including EPBC search, reviewing of (MNES). These include: relevant biological databases and Biodiversity Environment Conservation National threatened species and literature reviews) it is considered unlikely (note SA has a (EPBC) Act 1999 that the project will have a significant ecological communities bilateral arrangement
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Legislation Description Approving Authority Indicative Assessment and Approval Timeframes (Cmth) Migratory species protected under and assessment and impact on a MNES. international agreements approval may be Further assessments including detailed Ramsar wetlands of international possible through the on ground vegetation survey and fauna Major Development assessment have confirmed this outcome importance Process under the and that no referral is required. National Heritage places Development Act)
Where an action will have or is likely to have a significant impact on a MNES approval referral for assessment and approval by the Commonwealth Environment Minister is required. Native Title Act Under the Native Title Act “future Crown Solicitors 1993 acts” may only proceed in accordance Office Assessment (by Crown Solicitor’s Office) through Corporate Council has confirmed with the Act. Future acts are defined Native Title claimant Native title is extinguished on the EBS, as an act which affects Native Group pump station & associated pipeline. Title. An act affects native title if it extinguishes the native title rights and interests, or if it is otherwise wholly or partly inconsistent with their continued existence, enjoyment or exercise. Native Title may still exist in: vacant or unallocated land; some reserve lands; some types of pastoral leases; and lakes, rivers, creeks, swamps, beaches and other waters not privately owned.
South Australian Aboriginal All Aboriginal sites and objects Traditional Owners A desktop review of the study Heritage Act protected under the Act. (consultation and area (pipeline, AWRP, EBS) informal approval) including AAR register searches 1988 Authorisation from the Minister for has identified no sites within Aboriginal Affairs is required to Formal approval to interfere, damage or disturb damage disturb a site - the EBS or associated pipelines. Aboriginal heritage sites, objects or Minister for Aboriginal On the 12th – 13th April 2018, remains. Affairs Neale Draper and Associates undertook a cultural Heritage survey with Kaurna at the proposed EBS location. The results of the survey were that no areas or objects of Aboriginal archaeological or cultural significance were encountered in the above ground storage area.
A NAIS Cultural Heritage Management Plan and site specific Aboriginal Heritage Discovery Flow chart has been developed for the project and will be utilised for the Construction of the EBS.
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Legislation Description Approving Authority Indicative Assessment and Approval Timeframes Development Works that constitute Development require Development The earth bank storage will approval. Development includes but is not Act 1993 Assessment require a development limited to: Commission (DAC) – application and conditions to be Change of land use Crown Developments included in the Construction Building works Environmental Management Prescribed earthworks Governor (Major Plan. Risks include construction Impacts to Significant/Regulated Developments) traffic routes on public roads, Trees noise and dust management, Impacts to State Heritage places These are to be managed Section 49 of the Development Act sets out the through the Construction provisions for Crown based developments and Environmental Management public infrastructure Plan Appendix 6) Schedule 14 of the Development Regulations includes a number of activities which are
excluded (exempted) from the provisions of Section 49 of the Development Act, and as such the procedures required under Section 49 of the Act need not be followed for these activities subject to certain conditions. Heritage Works that impact on State heritage require Development Project location assessment development authorisation Assessment Act/Development have not identified any State Commission (DAC) Act heritage listings within the indicative project footprint. Environmental Prescribed activities of Environmental Environment Protection Protection Act 1993 Significance (as per Schedule 1 of the Act) Authority (EPA) EPA provided approval for soil (Section 36 – require an EPA licence. Such activities sampling regime of one sample Requirement for include: per 1000m3 instead of one licence) MAR sample per 250m3 as per the Sewage treatment EPA waste derived fill guidelines Desalination as per Tonkin Consulting Abrasive blasting recommendation report dated Dredging 21 February 2018. FMG report Earthworks Drainage ( >100kL then confirmed “Based on the with suspended solids being results of the limited >25mg/L discharged to environmental assessment, waterways including FMG classify the soil (excluding stormwater) Transport of contaminated soil the area around BH38) as Waste Fill for the purposes of off-site disposal to a suitably licensed waste disposal facility or potential re-use as Waste Derived Fill.” Bore hole 38 is now being re-sampled to determine the extent of Hydrocarbon surface spill 0m- 0.2m to dispose at a licensed waste facility. A traffic management plan has been developed.
Environment The EPA includes a number of policies These are to be addressed as Protection Policies compliance with the policy assist with Environment Protection part of the CEMP.
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Legislation Description Approving Authority Indicative Assessment and Approval Timeframes demonstration that meeting General Authority (EPA) Environmental Duty. Key ones for SA Water works include: Noise Policy Air Quality Policy Water Quality Policy Waste to Resources Policy
Native Minor clearances: A high level / preliminary environmental Manager, Environment scan identified some areas of vegetation Vegetation Act Approval for clearance of native vegetation is required. Native vegetation includes trees, and Heritage Services including native vegetation is present 1991 shrubs, groundcovers and grasses. Intermediate clearance: within the project area. joint approval between A survey of the project area by EBS SA Water and Native ecology has provided advice into the Vegetation Council pipeline alignment to avoid areas of Secretariat significance and minimise areas of clearance. A further study of the EBS Major clearance: Native location has been undertaken by SA Vegetation Assessment Water Environmental Manager and found Panel/ Native Vegetation no areas of native vegetation present Council approval within the EBS Site. Some scattered native vegetation amongst a predominant weed understory was found on Porter Road. A further Native Vegetation Survey by EBS Ecology is being undertaken in July. The area ia mainly used for primary production and little to no native vegetation remains. The survey will determine if any offset is required. For the EBS pipeline approach works a weekly site walkover ahead of the pipe laying crew will identify areas of significance prior to the pipe laying crew to minimise impacts to native vegetation and minimise offset requirements and rather protect the remaining native vegetation where possible Natural Importation of spoil NRM Board Resources The importation of additional material is required to be from a licensed Natural Management Resource Management approved quarry Act 2004 i.e. weed free spoil.
All excavated material from CH18000 to the EBS will be sourced from depth and unlikely to have weeds present. However prior to the importation of spoil the location should be assessed as per the EBS Ecology Native Vegetation and weeds mapping.
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
4. ENVIRONMENTAL MANAGEMENT SYSTEM AND STRUCTURE
Environmental system requirements During the set up and establishment of the project the following systems must be implemented and maintainted. Form Related Name Frequency Responsibility Number Procedure Drawing Register F011 Updated as required Project Manager QA-01 Incoming Plant Inspection F024 For all incoming hired plant Supervisor HSE-06 Toolbox Meeting F026 Weekly Supervisor HSE-03 Pre Start Meeting F027 Daily Supervisor HSE-03 Site Induction F028 Ongoing as required Project Manager HSE-02 Project HSE-04 Environmental Inspection F029 Weekly Manager/Supervisor Hazard and Incident Report F035 As required Supervisor HSE-01 Project HSE-01 Incident Investigation F036 As required Manager/Supervisor Safe Work Method HSE-14 F040 Required for each task Supervisor Statements (SWMS) Plant Daily Inspection F024 Daily Operators HSE-04 HSE Activity Schedule F137 Reviewed monthly Project Manager HSE-15 Management of Change F062 As required Project Manager QA-10 Subcontractor Approval F063 Prior to sub-contractors starting work Supervisor HSE-16 Excavation Permit F064 Prior to excavation works Supervisor HSE-11 Daily Excavation Inspection HSE-11 F065 Daily for any excavation left open overnight Supervisor Checklist
Inductions and Training All project staff, including subcontractors, must be inducted to the requirements of the project CEMP and associated procedures. The induction shall ensure that any site specific environmental controls and/or requirements associated with Aboriginal Heritage are communicated to staff prior to the commencement of on-site works. A record of inductions shall be maintained.
Records and record keeping Relevant schedules and records should be retained on site during the construction phase of the project. As a minimum this shall include: CEMP Prestart inspection checklists
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Induction / Training registers Monitoring/inspection reports and audit reports Non-conformance reports Environmental incident reports/register Waste tracking and disposal records Listed/controlled waste transport certificates and volumes Complaints register
Roles and Responsibilities Project Manager The nominated Project Manager is responsible for: Ensuring that work crews are provided with and made aware of the contents and requirements of this CEMP Monitoring the effectiveness of implementation of this plan Being a point of communication with the Client’s Representative
Site Supervisor The Site Supervisor is responsible for: Implementing the control measures in this document such as establishing site controls Inducting site personnel into the requirements of the CEMP Undertake regular site inspections and monitoring the effectiveness of onsite controls, instigating improvements where necessary Maintaining site records such as site inspections/monitoring reports, induction records, NCRs or incident reports Liaising with the Project Manager where environmental issues or concerns are raised that require further attention Enforcing work practices that minimise adverse environmental impacts through due diligence Ensuring all employees report any environmental risks or hazards Implementing additional mitigation measures in the event of non-conformances or emergencies
Employees, sub-contractors and Labour hire personnel All employees (including subcontractors) have an obligation to protect the environment when carrying out their work this includes: Being aware of the contents of the CEMP including general environmental statutory requirements to carry out their work with due diligence. Complying with instructions/directions given by the Site Supervisor Report any incident that may result in environmental harm that arises in the course of or in connection to their work.
Name Project Position Organisation Contact Details
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Paul Teakle Operations Manager Leed 0419 819 897 [email protected] Jason Mitchell Project Manager Leed 0419 833 342 [email protected] Peter Button Project Engineer Leed 0400 166 202 [email protected] Jashwin Bhalla 0428 242 934 [email protected] Tony Bornholm HSEQ Manager Leed 0438 166 023 [email protected] Leigh Sutherland General Superintendent Leed 0418 166 023 [email protected]
Inspections and Monitoring of Environmental Performance Inspections of the work area shall be carried out by the Site Supervisor to ensure the environmental management controls are effective. Issues arising from site inspections shall be addressed as soon as possible, in some cases non- conformance reports may be raised. Issues identified shall also be discussed at toolbox or site meetings together with any improvement measures that have been implemented. Monitoring records shall be retained by the Site Supervisor. Frequency Issues Compound/worksite controls are in place, locations for materials/stockpiles and access identified Prior to works Location of sensitive neighbours Location of stormwater entry points, drainage lines, water courses identified Location of spill control measures and spill kits available Site is neat and tidy Waste contained appropriately Chemicals and materials stored appropriately Daily No evidence of dust nuisance No evidence of water contamination/runoff form site Adjacent roads clean (not covered in sediment etc). Runoff controls in place and maintained Before/during rainfall Protection of stormwater entry points events Adjacent roads clean (not covered in sediment etc). Drainage lines clear of debris Monthly Overall environmental management measures as per HSE Activity Schedule in place
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Audits The first environmental audits shall be carried out four weeks after commencement of the project and involve meeting relevant site personnel, inspection of project activities and relevant records. Subsequent audits shall be scheduled considering the length and complexity of the work, and conformance status of the first audit. A report of conformance status against this CEMP and corrective actions will be provided following each audit visit and entered in to the Leed’s Audit Register.
Non-conformance and Corrective Action If inspections/monitoring/auditing activities identify an environmental non-conformance the following actions shall be undertaken: Inspect/Review the non-conformance, where necessary stop/control the activity until the environmental non-conformance is addressed Report the non-conformance to the Client’s project manager Investigate the reasons for the non-conformance and Implement appropriate action to address the non-conformance, amend CEMP/CMS and SWMS as necessary Record details of the non-conformances
Environmental Performance Statistics and Reporting Environmental related events shall be categorised and the number of events in each category shall be recorded during the course of the project:
MEI: Minor Environmental Infringement. Notification Where a complaint/incident has been received from the Leed Project Manager ASAP client, Leed or public that the undertaking of works by Superintendant’s Representative at site Leed is or has caused an inconvenience. (i.e. excessive meeting dust or noise) Report Incident report within 1 week ECI: Environmental Clean-up Infringement. Notification A minor event requiring the clean-up of an unwarrantable Leed Project Manager ASAP spill (i.e. oil, fuel, minor chemical etc.) which is able to be Superintendant’s Representative within 24 attended to by the site team. hours Report Incident report within 1 week NEI: Notifiable Environmental Infringement. Notification An event which requires the EPA (or any other regulatory Leed Project Manager ASAP body) to be notified. Superintendant’s Representative within 12 hours Report
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Incident report within 48 hours
Review The Project Manager has the overall responsibility for reviewing and evaluating the implementation of this plan. The review and evaluation will be undertaken monthly and will assess whether the directions have been implemented and continue to be relevant. The Project Manager will conduct the review and evaluation in consultation with the QAE Officer and communicate outcomes with Leed staff through a toolbox meeting.
5. ENVIRONMENTAL CONSIDERATIONS
Flora and Fauna
The EBS site has been chosen due to its suitability of geotechnical investigations for soil type, being outside of the majority of the flood zone, suitability of proximity in the primary production zone and the site has been heavily disturbed with minimal presence of remaining native vegetation.
SA Water has engaged a contractor EBS Ecology to undertake a vegetation survey of the EBS site, the surrounding roads (Porter and Hart Rd) and the remaining 5km of pipeline from Port Wakefield Rd to bring the recycled water to the EBS site. Two pipeline options were considered, the other being in the road shoulder of Port Wakefield Rd however this included significant vegetation removal and safety implications during the construction and operation of the pipeline in the road corridor.
The On-ground assessments of native vegetation will confirm any impacts to native vegetation and the presence / absence of species of conservation significance are present. A Native Vegetation Offset may be required for the removal of some roadside vegetation to be paid by SA Water. A significant portion of the pipeline to and from the EBS will be constructed in roads to avoid areas of roadside native vegetation.
If flora and fauna of conservation significance are present vegetation management measures will be required to be implemented during construction to protect high value native vegetation. However a desktop assessment undertaken has found the area is significantly disturbed grazing land with minimal native vegetation remaining.
Air Quality and Dust Suppression
Construction works have the potential to impact local air quality particularly associated with dust generated during ground disturbing activities and management of stockpiles. Emissions may also be associated with the use of construction and other heavy vehicles. Such impacts will be diffused using site designated Water truck to suppress the dust at the EBS Site and heavy traffic area (such as new access tracks); throughout the construction period.
Given the existing site use and distance to nearest sensitive receptors it is considered with the implementation of construction environmental management controls there will be minimal impacts on local air quality. Regular assessment of the site weather conditions including wind direction and speed will be undertaken at daily tool box meetings to determine the risk to the adjoining public roads and nearby sensitive receptors. If dust cannot be adequately controlled by water cart
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme suppression and is causing reduced visibility or public nuisance works causing dust will cease until cleared of further impacts. Vehicles will be fitted with squawkers to avoid noisy reversing on public roads and a site specific stakeholder engagement plan has been developed with the adjoining neighbours to ensure they are kept informed of the planned works.
During the operational phase the proposed development is expected to have negligible impacts on air quality. Dust emissions will be low due to aspects such as roads being comprised of hard surfaces and traffic and no increase to vehicle movements as the site will be un-maned with weekly site inspections only. Native vegetation landscaping on the earth bank storage batters and site perimeter will assist in soil stability.
The potential for odour impacts to the surrounding locality as a result of the development is considered very low. There are no components in the EBS that will likely cause odour as the EBS is sourced from post the waste water treatment of the Bolivar site and is high quality recycled water.
Soil Classification and Testing Prior to the construction of the EBS, the “SA Water NAIS Spoil Classification – Sampling and Assessment Program” was developed. The sampling and testing program included push tube samples being collected at various locations scattered at the footprint of the EBS, and lab tested as per the EPA waste derived fill guidelines and for the suitability of building an earth bank storage. The results found the clay suitable for the construction of an EBS and were confirmed as waste fill as per the EPA Waste derived Fill Guidelines. The majority of the material used for the construction of the EBS will be site won through cut / fill and no material will need to be required to be disposed off-site. All the cut and fill material will be used for the construction of the EBS; in entirety. Additional spoil created from the construction of the NAIS transfer pipeline (From Bolivar WWTP) from Chainage 18000m onwards (Gawler River) will be stockpiled at the EBS site. This spoil will be carted to the EBS site using semi-trailer trucks or truck and trailers and later be utilised for the construction of the EBS (Appendix 8 Traffic Management Plan). Geotechnical investigations of the spoil to be brought to site have been undertaken by FMG and tested as per the EPA Waste derived Fill Guidelines. The soil sampling was undertaken as one sample per 1000m3 instead of the normal 250m3 as per the EPA Waste derived Fill Guidelines. This methodology was approved by the EPA on the 28th February 2018 as per Tonkin Consulting recommendation report dated 21 February 2018. The results confirmed the material is classified as “waste fill” and suitable for re-use for the construction of the EBS. With the exception of bore 38, where a historical hydrocarbon spill at the surface for a depth of 200mm will be required to be disposed at licensed waste facility. Further sampling of the extent of hydrocarbon spill around bore 38 will be undertaken to ensure the full extent of the spill is taken to a licensed waste facility and only clean “waste fill” is brought to the EBS. (report) Once the EBS designs are finalised and the exact quantities of material are quantified; there may be a requirement of importing new Quarry material to overcome the deficit. This Quarry material will be sourced form SA Water approved Quarry material suppliers and NRM Board approved weed free.
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Spoil Stockpile During the pipeline construction approximately 70,000m3 of spoil material will be removed from the pipeline trench. Of this approximately 30,000m3 will be from CH18000 onwards (north of the Gawler River); which will be carted to the EBS site and stockpiled for re-use use during the construction if classified as clean fill as per the EPA waste derived fill guidelines. A soil migration tracking sheet will be used to capture soil movements from location of trench excavation to stockpile site. A traffic management plan of the transport route is illustrated in appendix 8. To ensure material brought to site is weed free additional controls include: Soil to be brought from depth only with no topsoil (surface weeds mobilisation). Any import of material to be from an NRM Approved quarry and weed free No material to be brought from Clay and Minerals Bakers Pit Quarry.
Refueling All plant and equipment will be refueled with a refueling truck service, with an advanced spill-protection system. This avoids the large storage of fuel on-site. Therefore no bulk storage of fuel on site during the construction period. Smaller amounts such as 20L jerry cans will be stored within the site containers inside a bund with 120% capacity of the largest container.
6. Heritage Considerations
A desktop review of the study area including AAR register searches has identified no sites within the EBS or associated pipelines. On the 12th – 13th April 2018, Neale Draper and Associates undertook a cultural Heritage survey with Kaurna at the proposed EBS location. The results of the survey were that no areas or objects of Aboriginal archaeological or cultural significance were encountered in the above ground storage area. A NAIS Cultural Heritage Management Plan and site specific Aboriginal Heritage Discovery Flow chart has been developed for the project and will be utilised for the Construction of the EBS (Appendix 6). A Native Title assessment of the Earth Banks Storage site (CT 5662/19) by the Crown Solicitors office confirmed Native title has been extinguished by a valid grant in fee simple (prior to 1994) and once extinguished cannot be revived.
7. SOIL EROSION DRAINAGE MANAGEMENT
EBS Site – Including Site Compound As per the NAIS AWRP DA Environmental conditions the following measures have been taken into consideration during construction of the EBS and associated infrastructure:
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
- Minimisation of Air Quality Impacts. Poor air quality resulting from excessive dust will be controlled with the use of a water cart on site. - Noise Management. Works to be contained within the EBS site, between the hours of 0700 and 1730. During the operations phase the Pump Station and the back-up Desil generator (used in case of SAPN outage, only) will have sufficient built-in noise attenuation around it. - Management of any site contamination. Site chemicals will be contained within sufficient sized bunds (120% capacity of the chemical stored), and the diesel backup generator for the EBS pump station will be constructed within bunds that meet EPA requirements. - Waste generation, storage and disposal. Soils for reuse in the EBS construction will be stockpiled on site at the location where the storage will be built. Stockpiles will have silt fence and Coir logs (CoCo logs) placed around the out side of the stockpile area. Silt fence and Coir Logs (Coco logs) will also be placed on the construction side of all existing swale drains - Training of employees & persons responsible for implementation of EBS All employees inducted on site will be made aware of the EBS and it’s requiremnts. It is the responsibility of the Site Supervisor to ensure these requirements are in place, as per Section 4 of this CEMP.
Dewatering Dewatering will not be required during the construction of the EBS. There may be a requirement to dewater as part of the excavation of footings for the pump station structures or the trenching along the pipe alignment for the pipe coming to and from the EBS storage. If this is the case, the dewatering guideline will be followed. In particular the dewatering hierarchy will be followed.
For example, if constructing shallower footing above the groundwater table is feasible, the avoidance of dewatering can be achieved. Dewatering pipeline and later construction activities may be required. Water quality results to be reviewed to determine effectiveness for re-use and last resort disposal (if required). Sampling of dewatering material to continue throughout the pipeline project. Private land holder permission must be obtained prior to dewatering groundwater to private property.
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Leed Engineering Earthworks and drainage management plan to be used if discharging to a watercourse or stormwater (plan to be developed and sent to EPA for review min 7 working days prior). Dredging management plan to be developed for all watercourse crossings and sent to EPA for review min 7 working days prior).
Waterways There are no waterways within or around the EBS Site. The 1 in 100 year flood zone has a medium risk of flowing past the EBS site to the north but will not be impacted by the planned works.
8. EMERGENCY RESPONSE AND ENVIRONMENTAL INCIDENTS
Emergency Planning, Preparedness and Response An Emergency Response Plan shall be in place for the project. This plan shall provide an effective response whilst minimising environmental harm or disruption. The Emergency Response Plan shall be available and on display at the worksite and all personnel shall be inducted into its requirements. The Plan shall include key contact details and: a person(s) for emergencies that will be available 24 hours a day, seven days a week, and has the authority to stop or direct works emergency response personnel the Client’s Project Manager local councils local hospital(s) and if necessary, nearby residents In the event of an emergency the emergency response plan shall be enacted. Post the event a review shall be undertaken to evaluate the effectiveness of the response against the procedure and determine if any amendments are considered appropriate. Please refer to Appendix 4 for Key Environmental Contacts
Environmental Incident Management In the event of an incident action shall be taken to stop/modify the work to effectively minimise impacts to the environment. Where an environmental incident occurs that causes or threatens to cause serious or material environmental harm (breach of legislative requirements, widespread impact etc) then the EPA shall be notified within 4 hours for a type 1 incident and within 24 hours for a type 2 incident. SA Water should be notified immediately to classify the incident and provide input into suitable mitigation measures. Incidents may include: main burst/flooding events, sewer spills, chemical or fuel spills, discharge if contaminated water, unauthorised/unintended impacts to vegetation etc. Any environmental incidents shall be investigated and reported to the Client’s Project Manager as soon as practicable or no later than 24 hours after the incident is identified. Reports shall include details of the incident and any corrective actions taken.
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
A record of all incidents shall be maintained. In the case of an environmental emergency the Emergency Response Plan shall be followed. Please refer to Appendix 2 for Environmental Management Controls 9. APPENDIX 1 – ENVIRONMENT AND SUSTAINABILITY POLICY
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
10. APPENDIX 2 – ENVIRONMENTAL MANAGEMENT CONTROLS
Environmental Water Quality Impacts / Pollution of Water Impact Objective Prevent or minimise adverse effects on surface water and groundwater quality, flows and drainage No deterioration on receiving waterway quality including for pH, turbidity, dissolved oxygen, Performance chlorine residual and visual oils and greases. Indicators Construction materials and sediment laden runoff prevented from entering waterbodies/stormwater Pre Construction Review construction area to minimise potential for surface runoff to enter the site and to identify controls for runoff leaving the site Identify water bodies/drainage lines (including stormwater side entry pits) and identify sediment /erosion control requirements eg silt fences around stockpiles, silt sock locations at stormwater entry pits etc. Review project activities that will require protection and installation of controls Identify designated stockpile/laydown areas away from drainage lines. Schedule works that will occur in watercourses /drainage lines for periods of favourable weather (eg dry periods) or implement construct techniques that reduce construction footprint Construction No discharge to a watercourse (including stormwater system) without approval Controls Install erosion and sediment control devices prior to works commencing (silt fences, silt socks, hay bales diversion drains, geotextile fabric) and ensure maintained (eg remove debris from sediment control items regularly) Ensure stockpiles have erosion control devices installed, particularly on downslope of stockpiles Monitor weather forecasts to identify rain events and ensure control measures in place Inspect and maintain/clean sediment control items regularly Clearly define access tracks and routes and use these Use a street sweeper or similar to clean sediment/debris form public roads Compact, backfill and resurface disturbed or unsealed areas as soon as possible No onsite refuelling, service or maintenance or cleaning in areas where runoff/wastewater may enter stormwater system or waterbodies. All equipment washdown to be undertaken within an identified washdown area, no discharge of washdown water to stormwater or watercourse. Turbid water from concrete cutting etc not to be directed to stormwater or watercourses.
Environmental Damage to Vegetation Impact Objective Protect and minimise impacts to vegetation as part of the works Performance No unauthorised clearance Indicators Protection in place (bunting, marking off) for vegetation on site where appropriate Pre Construction Identify vegetation in/adjacent to the works area that may be impacted and plan access Controls routes, plant/vehicle parking, stockpiles and material storage locations away from vegetation Plan works to avoid in first instance or minimise impacts to vegetation (Significant/Regulated trees or Native Vegetation) Seek approval for any impacts to Sig/Reg trees or native vegetation clearance prior to works
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Environmental Damage to Vegetation Impact Construction The location of fence posts within the drip zone of trees should be minimised as much as possible during fence construction. No clearing of native vegetation (unless approved or covered by maintenance/operational exemption Utilise existing access tracks/roads where available or ensure access via previously disturbed cleared areas. Park vehicles and store equipment or stockpiles (including soil) in areas that are designated/pre-marked as laydown areas or already cleared (e.g. tracks) to avoid smothering or damaging native vegetation. Avoid impacts to roots (10m from drip line optimal) wherever possible. If roots (. 50mm) are discovered during the works these are to be bridged where possible. Roots discovered <50mm which are broken are to be clean cut with a saw. Where working in roadside areas care shall be taken not to impact in areas where Roadside Significant Markers are present. These identify that a section of roadside reserve contains a significant feature such as rare flora, matters of cultural heritage or significant native vegetation.
Environmental Introduction of weeds and pathogens Impact Pest plants / pathogens not introduced into worksite or spread as result of works Objective No movement of declared plants in a uncontrolled manner Performance No new incursions of declared plants or plant pathogens post construction Indicators Weed and hygiene measures in place Preconstruction Ensure any declared plants within work area are identified Ensure plant and machinery washed down prior to entry to work zone. Construction Ensure imported material is ‘weed free’ by applying a risk based approach, material is considered weed/pest free if: o Quarry material is sourced at depth and is not stockpiled/surface material. Controls o Sourced from a licenced quarry (and/or quarry site inspected by the local NRM Board with records to confirm appropriate weed management strategy is in place that minimises the risk of weed contamination of material taken from that site). If quarry material is considered top soil, inspection by suitably qualified person is required to ensure fill is weed/pest free. Locate stockpiles away from weed infested areas where possible Appropriate washdown of machinery if sourced from weed or disease risk areas or have carried imported material. All equipment washdown to be undertaken within an identified washdown area and water contained within that area (no discharge of washdown water to stormwater or watercourse).
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Environmental Fauna Impact Objective Prevent or minimise disturbance to native fauna and their habitat Performance Fauna within works area not adversely impacted Indicators Pre-construction Ensure contact list for local/regional fauna rescue organisation available
Construction Any injury or death of native wildlife caused by the construction activity will be reported to Controls the Client’s Project Manager If tree hollows are present and trees require pruning/ clearing, these must be checked for fauna before removal If any fauna is found, the Supervisor will report the details of discovered fauna to the EMR for relocation if required. Where native fauna is likely to be present within works area minimise risk of entrapment (eg close trenches overnight)
Environmental Stockpile, Erosion and Stormwater Management Impact Objective Minimise the potential for environmental impacts associated with poor stockpile management No sediment laden runoff leaving works area Performance No dust from stockpiles leaving site and impacting sensitive land uses (residents/schools, Indicators sensitive habitats) Management of contaminated spoil in accordance with EPA requirements Preconstruction Identify designated stockpile/laydown areas away from drainage lines, drip lines of trees/vegetated areas Identify potential soil contamination that may require management and ensure appropriate areas for stockpiling established
Construction Follow requirements of the EPA Guideline for stockpile management including: o Materials with a potential to produce leachate and contaminated runoff should be Controls stored in a sealed and bunded area. o Limit stockpile height o Materials must be stored away from surface watercourses, flood zones and groundwater recharge areas to prevent environmental harm to water. Locate designates fill stockpiles away from vegetation and drainage lines. No stockpiling within the drip lines of trees to minimise compaction of the root zones. Maintain separate stockpiles for different materials Remove excess spoil from the site and dispose of in accordance with EPA requirements including at EPA licenced landfill or other appropriate location as approved. Install erosion control measures such as silt fences, hay bales, sedimentation sumps, sand bags, geotextile fabric, diversion drains or other appropriate measures on the down slope side of stockpiles.
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Environmental Air Quality (Dust, emissions, odours ) Impact Ensure that particulate and gaseous emissions do not cause environmental nuisance or harm to Objective surrounding community and environment No community complaints during construction regarding air quality (dust, odours) Performance No impact to adjacent sensitive land uses (eg houses, schools) Indicators Results from visual inspections show no visible dust leaving boundaries of construction site Preconstruction Identify site access, laydown areas and stockpile locations Identify sensitive receivers and dust monitoring requirements. Construction Restrict high risk activities during extreme weather events (strong winds, hot dry weather) to dry/calm conditions if required to limit dust generation. Water cart available to control dust if required. Controls Minimising the extent of exposed and stripped surface areas within the project area Ensure construction facilities are designed and operated to prevent the emission of smoke, dust, cement dust and other potentially deleterious matter into the atmosphere. Maintenance of vehicles and equipment. Reduce idling time of vehicles and plant. Reduce vehicle speeds on dirt roads to reduce dust emissions. Cover loads if dust is an issue. Stockpiles to be managed to reduce dust (manage height, covering wetting as required) Undertake inspections of dust/ emissions controls and activities and respond accordingly
Environmental Noise and Vibration impacts Impact To ensure noise and/or vibration from construction does not cause an environmental nuisance or Objective adversely impact amenity/ people or result in damage to property. Performance No complaints related to noise or vibration Indicators No property damage resulting from vibration Preconstruction Plan timing of noisy activities to avoid impacts on nearby residents Select good plant and equipment that generates low noise and vibration Consult with stakeholders in advance of works Ensure machinery has appropriate mufflers, silencers and/or enclosures fitted Investigate alternative processes/methods that will reduce noise and vibration Construction Construction activities should be in accordance with the EPA Construction Noise Information Controls Sheet (EPA 425/10). o Normal hours of work should be between 7am and 7pm, Monday to Saturday o Work outside these times may be permitted to avoid impacts such as unreasonable interruption of vehicle or pedestrian traffic movement, Environmental Services should be advised in such cases. o Commencing any particularly noisy part of the construction activity after 9 am, such as use of masonry saws or jackhammers Notify nearby residents/landowners if any project activities proposed outside of normal construction times Use appropriate equipment for the task Regularly maintain plant and equipment used during construction (eg rotating parts to be
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Environmental Noise and Vibration impacts Impact balanced) Enclose, where practical, stationary constant noise sources such as air compressors, generators etc to reduce noise levels Maximise the distance between vibration sources and receivers if possible Maintain complaints register and respond to complaints received
Environmental Storage and Handling of Hazardous Substances Impact Objective Manage the storage of hazardous substances to avoid contamination of surrounding soils and water. Performance Hazardous substances stored appropriately and spill kits on site. Indicators No impact to soil/groundwater associated with storage use of hazardous substances. Preconstruction Plan for sufficient plant and equipment to ensure minimal maintenance and refuelling required on site Identify areas for storage, refuelling and spill kits. Establish bunded area and/or where appropriate lockable bunded container in compound for storage Construction Hydrocarbon spill kit available and personnel trained in the efficient use spill kits readily available. Minimise quantities of hazardous substances, fuels and lubricants stored on site. Store and handle chemicals/hydrocarbons as per the product MSDS. MSDS to be available at all times Controls for hazardous substances that are used or stored. Storage and management requirements for hazardous substances in accordance with legislative guidelines including bunding, impervious floor and in a location not subject to flooding and within a pre-marked laydown area. All waste oil to be collected and disposed of at an EPA Licensed Recycling Depot. Ensure no discharge of hazardous substances or fuels/lubricants into water courses or storm water. The decanting, mixing, applying, storing of chemicals including paint, or the refuelling of vehicles or equipment shall not be conducted within 50 m of a watercourse or drainage channel. In the event of a minor spill (e.g. diesel), affected soil to be excavated and disposed of at an appropriately licenced landfill. In the event of a major fuel or chemical spill, immediately notify the Clinet’s Project Manager of the spill and if known, any associated details (e.g. Type of spill, source, time of incident).
Environmental Contamination Impact Identify potential contamination issues on site. Objective Manage such issues to protect employees, the public and the environment. Performance No impact to soil/groundwater associated with contaminated material. Indicators No risk to employees from encountering and managing contaminated material Preconstruction Controls Undertake assessment of risk of encountering contamination based on historical or surrounding land uses
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Environmental Contamination Impact The Contractor undertaking the removal of asbestos should be licensed by SafeWork and have an approval (from SafeWork) to undertake the removal activities. All asbestos removal should be undertaken in accordance with the current Code of Practice for the Safe Removal of Asbestos (2nd Edition) [NOSC: 2002(2005)]. All asbestos removed will need to be transported by an appropriately EPA licensed transporter and disposed of at an EPA licensed facility in compliance with EPA requirements. Refer to the EPA’s “Wastes containing asbestos – removal, transport and disposal’ Construction In the case of unusual odours or visual observation being made during excavation that indicates soil/groundwater contamination work is to cease and the Client’s Project Manager contacted. The discovery of contaminated soil and/or groundwater is to be immediately reported to the Client’s Project Manager so as the appropriate authorities can be notified. Contaminated material must be transported and disposed of in accordance with EPA requirements (licenced waste transporter and to EPA licenced facility). Waste transfer certificates retained for contaminated material and available on request. If contaminated discovered: o Isolate the suspected contaminated area. o Separate any suspected soil/fill, store on impervious material (tarp/fortecon) and cover to prevent rain or wind mobilising material. Any contaminated fill requires NATA Certified Laboratory Test Results and must be disposed to an EPA licensed landfill (contact Environmental Heritage Services to arrange this) o Groundwater contamination is required by law to be reported to the EPA. o No disposal of contaminated groundwater to a stormwater or watercourse.
Environmental Aboriginal Heritage Management Impact Prevent or minimise Disturbance to cultural heritage sites Objective Ensure all statutory requirements are complied with and controls listed below are implemented to minimise potential disturbance to unknown sites. Performance Management of any Aboriginal discoveries in accordance with Leed’s SOP for the discovery Indicators of Aboriginal Heritage Pre Construction For all works not limited to within building or on existing infrastructure, undertake an AAR register search to determine if known heritage sites within the works area and complete heritage risk assessment
Controls Construction Leed’s procedure for the discovery Aboriginal Heritage must be available on site and all construction personnel inducted into this procedure. In the event of potential a potential heritage site or object being discovered during construction, works in the area must stop and the procedure for the Discovery of Aboriginal Heritage followed
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Environmental Fire Management Impact Ensure compliance with relevant fire regulations Objective To ensure that construction activities do not cause and emergency incident such as starting a fire. Performance No emergency incidents as a result of construction activities. Indicators Pre Construction Review fire danger season and schedule works to minimise risks associated with fire, where possible Conduct a risk assessment on days notified as total fire ban days before undertaking any works on site Have in place an emergency response plan for the works
Controls Construction Fire extinguishers/on site fire fighting equipment to be available on site and in work vehicles, major plant and equipment and ensure workers trained in their use Hot work permits required for hot works on total fire ban days, no works on catastrophic fire rating days unless approved. Maintain all machinery and vehicles in good condition to minimise risk of fires Fit plant with spark arrestors No burning off or burning of wastes
Environmental Waste Management Impact To ensure all statutory requirements are complied with relating to management of waste (including Objective Waste to Resources Policy) Maximise reuse and recycling of materials Performance Compliance with waste management requirements Indicators Pre Construction Adopt the principles of the waste management hierarchy : o Avoid the production of waste o Minimise the production of waste o Maximise reuse and/or recycling of waste o Treatment of waste o Disposal of waste in environmentally sound manner Controls Confirm the relevant statutory requirements for disposal of wastes from site Construction Carry out works to minimise waste production Segregate wastes to maximise reuse/recycling - Provide and use sealed waste and recycling bins Dispose of waste materials, waste oils etc at EPA licence facilities Waste to be removed from site using appropriately licenced waste transporters No burning of wastes
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
Environmental Visual Amenity Impact Prevent or minimise negative impacts from construction activities on the visual amenity of the local Objective area. Performance No community complaints regarding visual amenity during the construction period or post Indicators project associated with site condition (eg demobilisation) Pre Construction Assessment of potential visual impacts and opportunities to mitigate or improve visual amenity (eg landscaping/screening). The establishment of site facilities or undertaking other activities which are likely to adversely affect the visual amenity of the surrounding area are not permitted Controls Construction Implement waste and dust management controls Stockpiles, equipment and large plant to be located in areas of the project least likely to affect visual amenity (away from houses etc). Ensure good housekeeping and waste management on site.
Environmental Traffic Management Impact Objective To minimise the impact to the public associated with the construction of this project Performance Minimise complaints from the public regarding traffic management Indicators Pre Construction Assess impacts on traffic flow, direction and timing as part of project. Assess traffic management requirements to ensure safety to site workers and Controls community Develop traffic management plan for works Construction Traffic management controls implemented as per traffic management plan
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
11. APPENDIX 3 – INCIDENT RESPONSE AND EMERGENCY CONTACTS
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
12. APPENDIX 4 KEY ENVIRONMENTAL CONTACTS
Contact Contact Details
SA Water Project Manager Angelo Rossi 0408 084 436
SA Water Environmental Officer Alex Czura 0433 122 655
Police, Fire & Ambulance 000
Country Fire Service 1300 362 361
Metropolitan Fire Service 8204 3600
SAfeWork SA 1300 365 255
Environmental Protection Authority 8204 2004
RSPCA 8231 6931
National Parks and Wildlife SA 8204 1910
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
13. APPENDIX 5 LOCALITY MAP
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
14. APPENDIX 6 - ABORIGINAL HERITAGE
1. The Importance of protecting Kaurna Cultural Heritage The NAIS project lies within the traditional lands of the Kaurna people, and within the Kaurna Native Title Claim area), for which a consent determination has been made between the Kaurna People and the South Australian Government in March 2018. Significant Aboriginal heritage sites, objects and burials are protected by the SA Aboriginal Heritage Act (1988) and it is a serious offence to damage, disturb or interfere with such sites or items. The NAIS project area has several Aboriginal heritage sites in those areas that have been surveyed along the lower Gawler River, at Buckland Park and Thompson Creek, and around Bolivar. Although no Aboriginal heritage sites have been recorded in the area between Buckland Park and the Bolivar Waste Water Treatment Plant, this area has a similar profile in terms of soils and pre European native vegetation and is considered to have a high archaeological potential as well. Mound habitation and cemetery sites, traditional burials, surface archaeological sites (artefact scatters) and sub-surface archaeological sites and artefacts all may occur throughout this area. The area within half a kilometre of the Gawler River on both sides has the highest overall archaeological potential. Mound sites, burial sites and culturally modified trees all cluster within this zone. The Aboriginal wells in the park at Two Wells are important sacred sites associated with Kaurna, Narungga, and Ngadjuri Creation Ancestors and “Dreaming tracks”. Traditional burials, sacred sites made by Creation Ancestors and archaeological sites containing the physical evidence of the lives of their ancestors all constitute important elements of the cultural landscape and heritage of the Kaurna people. Kaurna people believe that these sites, burials and artefacts must be protected from disturbance, which would also endanger those persons causing the damage as well as their Kaurna custodians. Respect for Kaurna cultural heritage and traditional laws and customs is fundamental to the operation of the NAIS Project and to the attitudes and work practices of personnel working on the project. SA Water's overarching policy regarding Aboriginal cultural heritage management is to engage directly with the Kaurna traditional owners and to avoid any damage to known Aboriginal sites, objects or burials (SA Aboriginal Heritage Act 1988, 2016) as far as possible, thereby eliminating the requirement to seek authorisation under the Act to disturb any heritage assets. SA Water also adopts a risk-management approach in order to minimise any remaining risks of Aboriginal heritage impacts from its construction projects or operations in general, as described in the NAIS Project Kaurna Cultural Heritage Management Plan. 2. Heritage Risk Assessment along the NAIS Pipeline alignment.
The Table below and the attached map show the sections of the NAIS pipeline route that have lower (“Cleared”) or higher (“Monitor”) risks of encountering Kaurna heritage sites, objects or burials during construction. High-risk areas will have the assistance of experienced Kaurna Heritage Officers to monitor earth moving activities for the presence of Aboriginal heritage. However, all project personnel participating in these activities have the responsibility of keeping watch for the potential presence of Aboriginal heritage. All of these personnel will have access to the NAIS CHMP document as well as a specific CHMP induction session, delivered by a senior Kaurna representative and a project heritage consultant, who is on-call to identify any potential discoveries throughout the project.
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
15. APPENDIX 7 - ENVIRONEMNTAL CHECKLIST/INSPECTION
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
16. APPENDIX 8 - TRAFFIC MANAGEMENT PLAN
LVJV-G1-Q-PLN-0007 Rev 0 CEMP – Northern Adelaide Irrigation Scheme
LVJV-G1-Q-PLN-0007 Rev 0
Waste Classification of In-Situ Material
JOB NUMBER: S38284 - 260471
CLIENT: Leed Engineering & Construction Pty Ltd
SITE: Northern Adelaide Irrigation Scheme
DATE: 26/06/2018
REVISION: 2
Leed Engineering & Construction Pty Ltd Page i Northern Adelaide Irrigation Scheme
© Koukourou Pty Ltd trading as FMG Engineering The work carried out in the preparation of this report has been performed in accordance with the requirements of FMG Engineering’s Quality Management System which is certified by a third party accredited auditor to comply with the requirements of ISO9001.
This document is and shall remain the property of FMG Engineering. The document is specific to the client and site detailed in the report. Use of the document must be in accordance with the Terms of Engagement for the commission and any unauthorised use of this document in any form whatsoever is prohibited. No part of this report including the whole of same shall be used for any other purpose nor by any third party without prior written consent of FMG Engineering.
FMG Engineering provides this document in either printed format, electronic format or both. FMG Engineering considers the printed version to be binding. The electronic format is provided for the client’s convenience and FMG Engineering requests that the client ensures the integrity of this electronic information is maintained. Storage of this electronic information should at a minimum comply with the requirements of the Electronic Transactions Act 2000 (Cth).
Document Status
Reviewer Approved for Issue Rev No. Author Name Signature Date Name Signature Date 0 J.Elsworth D.Gowling 16/04/18 D.Gowling 16/04/18
2 D.Gowling D.Gowling 26/6/18 D.Gowling 26/6/18
FMG Engineering P 08 8363 0222 F 08 8363 1555 [email protected] 42 Fullarton Rd, Norwood SA 5067 fmgengineering.com.au
Leed Engineering & Construction Pty Ltd Page ii Northern Adelaide Irrigation Scheme
Table of Contents 1. Introduction ...... 1 1.1. Overview ...... 1 1.2. Scope of Work ...... 1 1.3. Limitations ...... 2 2. Methodology ...... 3 2.1. Initial Intrusive Investigation Methodology ...... 3 2.2. Laboratory Analysis ...... 3 2.3. Data Assessment Criteria ...... 3 3. Assessment Results ...... 4 3.1. Soil Description ...... 4 3.2. Analytical Laboratory Data ...... 4 3.2.1. Physical Criteria ...... 4 4. Data Validation ...... 6 4.1. Intra-Laboratory and Inter-Laboratory Duplicates ...... 6 4.2. Rinsate QA/QC Assessment ...... 6 4.3. Quality Control – Laboratory ...... 6 4.4. Quality Review Conclusions ...... 6 5. Conclusions and Recommendations ...... 8 Appendix A ...... 9 Borehole Location Plan ...... 9 Appendix B ...... 9 Reports of Boreholes ...... 9 Appendix C ...... 9 Tabulated Summary of Laboratory Results ...... 9 Appendix D ...... 9 Certificates of Laboratory Analysis and Chain of Custody Records ...... 9
Leed Engineering & Construction Pty Ltd Page 1 Northern Adelaide Irrigation Scheme
1. Introduction
1.1. Overview On 27 February 2018, FMG Engineering (FMG) was engaged by Leed Engineering & Construction Pty Ltd (the client), to undertake an in-situ waste classification assessment of soils along the length of the proposed Northern Adelaide Irrigation Scheme alignment (the site). Based upon information provided by the client, FMG Engineering understands the following: • a 19 km pipeline from Bolivar to Two Wells is proposed to be constructed as part of the Northern Adelaide Irrigation Scheme (NAIS); • construction of the pipeline will involve excavation of soils up to 4.5 metres below ground level (m bgl); • previous geotechnical drilling along the proposed pipeline (undertaken by others), including 48 boreholes to 4.5 m bgl, demonstrated a consistent pattern of red sandy clay (natural material) with no obvious signs of contamination, however the extent of the surface fill is unknown; and • it is anticipated that the excavation works will generate approximately 67,000m3 of surplus material. The purpose of this assessment was to chemically and physically assess insitu soils along the alignment to provide a classification for the surplus materials for offsite disposal to a licensed disposal facility or potential offsite reuse at a third-party site as Waste Derived fill. This report provides information on the methodology and results of the soil investigation and a waste classification for the surplus soil for disposal and reuse purposes.
1.2. Scope of Work Work was undertaken in accordance with FMG Engineering’s proposal provided to the client (EST14543), dated 26 February 2018. All works additionally complied with the requirements of FMG Engineering’s Quality Management System, which is certified by BSI Australia Pty Ltd to comply with the requirements of ISO9001. Additionally, soil investigations conducted at the assessment area were performed in accordance with: • Current criteria for the classification of waste, including Industrial and Commercial Waste (Listed) and Waste Soil (SA EPA, March 2010); • Standard for the Production and Use of Waste Derived Fill (SA EPA, January 2010); • Australian Standard AS4482.1-2005, Guide to the investigation and sampling of sites with potentially contaminated soil; and • National Environment Protection (Assessment of Site Contamination) Measure (NEPM), 1999 (amended 2013), referenced as “ASC NEPM” in this report.
Leed Engineering & Construction Pty Ltd Page 2 Northern Adelaide Irrigation Scheme
1.3. Limitations This report is intended for the sole use of the client and receiving depot and should not be relied upon by any other party. It has been prepared to meet the objectives of the client as understood by FMG Engineering at the time of writing. Those objectives may not necessarily be the objectives desired by any other third party or any potential user of the site. When receiving this report, the reader needs to be aware that the results pertain to a relatively limited scope of testing of material sourced from the site. Whilst we infer that the data was representative of soil conditions within the in-situ soil at the time of sampling, actual site conditions at and between the sampling locations may vary. This document is the subject of copyright and shall not be reproduced either wholly or in part without the prior written permission of FMG Engineering.
Leed Engineering & Construction Pty Ltd Page 3 Northern Adelaide Irrigation Scheme
2. Methodology
2.1. Initial Intrusive Investigation Methodology A site specific Health and Safety Plan (HASP) was prepared and implemented during site works. On 13 March 2018 to the 16 March 2018, a suitably qualified FMG Environmental Scientist mobilised to site to conduct fieldwork as part of the environmental investigation. Underground service location was arranged by the Leed, prior to the commencement of drilling. A total of 48 boreholes (BH1-BH48), were drilled at the site using a four-wheel drive mounted drill rig operated by Aussie Probe, to a maximum depth of 2.2m bgl. The borehole locations are presented on the borehole location plan (provided by Leed), within Appendix A. During the assessment works, a total of 152 representative soil samples were collected, ensuring that each distinct soil layer encountered within each borehole was sampled. Soil cores recovered from the boreholes were logged in accordance with Australian Standard AS1726-1993. The presence of any visual and olfactory evidence of contamination (e.g. suspicious fill, staining and colour) was noted and recorded on the borehole logs. The soil borehole logs are presented in Appendix B.
2.2. Laboratory Analysis A total of 93 samples were selected for analysis. Selected samples were analysed for one of more of the following: • Total recoverable hydrocarbons (TRH) and total petroleum hydrocarbons (TPH); • Benzene, toluene, ethylbenzene and xylene samples (BTEX); • Polycyclic aromatic hydrocarbons (PAHs); • Heavy metals (NEPM 15 suite); and • Analytes contained within the SA EPA Waste Screen. Intra-laboratory and inter-laboratory duplicate samples were collected at the rate of 1 in 20 to meet Quality Assurance (QA) requirements. Quality control procedures implemented during the fieldwork were in accordance with AS4482.1-2005. All primary and intra-laboratory soil samples were submitted to the primary laboratory, Envirolab Services and secondary (inter-laboratory) soil samples were submitted to the secondary laboratory, ALS Environmental, who are accredited by the National Association of Testing Authorities (NATA) for the matrix and analysis performed. The sample transportation procedure was subject to standard FMG Engineering chain of custody (COC) protocol. A field rinsate sample was collected from the sampling equipment to verify that the sampling equipment was clean and the decontamination procedures carried out were sufficient. The rinsate sample was submitted for the analysis of heavy metals.
2.3. Data Assessment Criteria To determine the suitability of the subject material for off-site disposal at a licensed waste disposal facility, the laboratory analytical results were assessed against the current criteria for the classification of waste (EPA, March 2010). The criteria determine the chemical suitability of material for off-site disposal at an EPA approved landfill or waste disposal facility. The three classifications of material include Waste Fill (WF), Intermediate Landfill Cover (ILC) and Low Level Contaminated Waste (LLCW). Individual analyte threshold concentrations for waste classification criteria are presented along with the laboratory results in the data summary tables (Tables 1-3) in Appendix C. The laboratory documentation is provided within Appendix D.
Leed Engineering & Construction Pty Ltd Page 4 Northern Adelaide Irrigation Scheme
3. Assessment Results
3.1. Soil Description Details of the sub-surface conditions encountered during the intrusive soil investigation are outlined in the soil borehole logs presented in Appendix B. Fill material was encountered in all boreholes along the alignment up to 1.4m bgl excluding boreholes BH40-44 and BH48. The fill was generally sandy gravelly CLAY, medium plasticity red- brown with angular gravels up to 5mm or sandy GRAVEL, coarse grained, yellow with gravel to 40mmm and SAND, fine to coarse grained, brown and red. Four distinct natural material types were encountered at the site, and are summarised as follows: • N1: Sandy CLAY, medium plasticity, red-brown; • N2: Sandy CLAY, medium plasticity, brown; and • N3: Sandy CLAY, high plasticity, grey mottled red-brown. • N4: SAND, fine to coarse grained, orange/yellow, yellow. No visual or olfactory evidence of contamination was observed by the Field Scientist. Groundwater was not encountered during the intrusive investigation. More detailed descriptions of the soils encountered are presented in the borehole logs within Appendix B.
3.2. Analytical Laboratory Data The following samples reported individual concentrations of analytes exceeding the published Waste Fill Criteria: • BH38_0.0-0.2 reported benzo(a)pyrene and total PAH concentrations of 3mg/kg and 17 mg/kg respectively, exceeding the benzo(a)pyrene ILC criteria of 2mg/kg and the total PAH WF criteria of 5mg/kg; • BH11_0.0-0.2b reported a copper concentration of 110mg/kg, exceeding the WF criteria of 60mg/kg • BH34_2.0-2.2 and BH36_2.0-2.2 reported manganese concentrations of 620mg/kg and 1,100mg/kg respectively, exceeding the WF criteria of 500mg/kg. Statistical analysis, including the 95% upper confidence level (95% UCL) was conducted on the data set and indicated that the material can be classified as Waste Fill if sample BH38_0.0-0.2 is excluded from the data set. The reported individual benzo(a)pyrene concentration for sample BH38_0.0-0.2 exceeds the Waste Fill criteria by more than 250% hence based on one sample of this material it would classify as LLCW. Furthermore, leachability testing was also conducted on BH38_0.0-0.2 and the leachable concentration of benzo(a)pyrene reported by the laboratory was <0.001mg/L, therefore this material may be disposed to landfill as LLCW. Tabulated summaries of the laboratory chemical testing results are provided in Appendix C. Laboratory certificates of analysis, sample receipt notices and chain of custody documentation are presented in Appendix D.
3.2.1. Physical Criteria SA EPA physical requirements for Waste Fill are that the material must consist of clay, concrete, rock, sand, soil or other inert mineralogical matter in pieces not exceeding 100mm in length and containing chemical substances in concentrations (calculated in a manner determined by the Authority) less than the concentrations for those substances set out in the SA EPA Guidelines (but does not include waste consisting of or containing asbestos or bitumen).
Leed Engineering & Construction Pty Ltd Page 5 Northern Adelaide Irrigation Scheme
Although there are no physical requirements for Intermediate Landfill Cover set out by the SA EPA, some waste disposal depots have internal acceptance criteria. These include inert mineralogical matter must be in pieces not exceeding 200mm in length and material should not contain significant organic material such as timber, vegetable matter or other waste materials. It should be noted that due to the nature of borehole drilling it is impossible to assess the material for any inclusions greater than 100mm in length. The client and contractor should be aware of this requirement and ensure, while excavating, the material meets the physical criteria of Waste Fill.
Leed Engineering & Construction Pty Ltd Page 6 Northern Adelaide Irrigation Scheme
4. Data Validation All primary samples and intra-laboratory duplicate samples were submitted to the primary laboratory (Envirolab Services). The purpose of the intra-laboratory duplicate is to provide information on the precision of the sampling technique and primary laboratory analysis. In addition, the NEPM supports the use of the inter-laboratory duplicate analysis to provide information on the accuracy of the analytical data. This was achieved by dispatching an Inter- laboratory duplicate sample to a secondary laboratory (ALS Environmental). Validation and interpretation of the QA/QC data was undertaken by calculating the relative percentage differences (RPD) for duplicate sample pairs. Results from RPD analysis of field duplicates and analysis of trip blanks taken during the investigation are included in summary Table 2 (Appendix C). Duplicate samples with RPD within the absolute range of 50% are considered to have acceptable correlation. Correlation of data is considered poor for values that exceed 50% of the mean concentration, however, consideration needs to be given to the inherent heterogeneity of the sampled material and the concentrations detected.
4.1. Intra-Laboratory and Inter-Laboratory Duplicates Five intra-laboratory and six inter-laboratory duplicate pairs were analysed as part of the assessment. The RPDs were within the adopted 50% acceptance range, with the exception of the following exceedances: • Lead (55%) and Zinc (86%) – BH7_0.0-0.2/ BH7_0.0-0.2b • Copper (158%) – BH11_0.0-0.2/ BH110.0-0.2b and BH11_0.0-0.2b/BH11_0.0-0.2c • Tin (67%) – BH22_0.0-0.2/ BH22_0.0-0.2b • Benzo(a)pyrene TEQ (82%) – BH7_0.0-0.2b/ BH7_0.0-0.2c The exceeding RPDs are likely due to the heterogeneous nature of the fill. RPDs could not be calculated for several analytes due to sample concentrations being below the laboratory limit of reporting (LOR) in both samples of the duplicate pair. The consistent below LOR results indicate good analytical data correlation between the sample and duplicate pair.
4.2. Rinsate QA/QC Assessment A rinsate sample was collected from the clean drilling equipment prior to sampling and was analysed for metals. Concentrations of metals were below the LOR indicating that drilling equipment was decontaminated sufficiently. The results of the rinsate and trip blank sample analysis are presented in appended Table 3.
4.3. Quality Control – Laboratory As part of their QA/QC program, Envirolab Services and ALS Environmental perform internal duplicate analysis, spiked samples and recovery efficiency analysis, and include blank analysis in accordance with NATA requirements. Details of internal laboratory QC results are included in results certificates (Appendix D).
4.4. Quality Review Conclusions • The number of quality control samples analysed was sufficient to comply with the ASC NEPM quality control guidelines; • RPD values suggest that no laboratory or sampling errors have occurred; • Holding times were acceptable for the analytes targeted;
Leed Engineering & Construction Pty Ltd Page 7 Northern Adelaide Irrigation Scheme
• No significant quality issues regarding sample analysis were identified throughout the quality control procedures; and • In summary, FMG Engineering consider that precision and accuracy of the analytical data is acceptable for the purposes of the investigation.
Leed Engineering & Construction Pty Ltd Page 8 Northern Adelaide Irrigation Scheme
5. Conclusions and Recommendations FMG Engineering (FMG) on behalf of Leed Engineering & Construction Pty Ltd (the Client), has undertaken a limited assessment of in-situ soils along the alignment of the Northern Adelaide Irrigation Scheme. Based on the results of the limited environmental assessment, FMG classify the soil (excluding the area around BH38) as Waste Fill for the purposes of off-site disposal to a suitably licensed waste disposal facility or re-use onsite. Sample BH38_0.0-0.2 is classified as LLCW for the purposes of disposal at a licenced landfill. FMG recommends further investigation and delineation of this contamination in the vicinity of BH38 to minimise disposal costs. Please note that during excavation of the material classified as Waste Fill (WF), the Client or their contractor should ensure that the material meets the physical requirements of WF including: • Material should be less than 100mm in diameter, homogenous, consisting of clay, concrete, rock, sand, soil or other inert mineralogical matter and not containing asbestos or bitumen (asphalt); and • Material should not contain significant organic material such as timber, vegetable matter or other waste materials.
Appendix A
Borehole Location Plan
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Neale Draper & Associates Pty Ltd PO Box 366 PROSPECT SA 5082
13 April 2018
Ben Dension Jeffrey Newchurch Aboriginal Heritage and Engagement Advisor Chairperson Environment, Land and Heritage Expertise. Business Services. Kaurna Nation Cultural 250 Victoria Square (Tarndanyangga) . Adelaide SA 5000 Heritage Association Inc. [email protected]
Dear Ben and Jeffrey,
SA Water NAIS Project Above Ground Storage Options Kaurna Heritage Survey 12-13 April 2018
I have just completed a cultural heritage survey of the three above-ground storage option locations for the SA Water Northern Adelaide Irrigation Scheme (NAIS) with four Kaurna representatives: Cecil Graham, Lynette Crocker, Merle Simpson and Karrl Smith.
These three areas are identified and located in the Tonkin Consulting Technical Memorandum 02 – NAIS DD to SA Water and Leed Engineering & Construction, of 23 March, on the subject of NAIS Earth Bank Storage Site Options, supplied to us by SA Water.
There were no areas or objects of Aboriginal archaeological or cultural significance encountered in any of the three above ground storage potential areas.
However, the third site that is situated on the north bank of the Gawler River, bordering Johns Road, causes deep cultural concerns for the Kaurna Elders because the Gawler River itself is culturally very significant, as are the mature red gums that are almost continuous along this stretch of the river. On this basis, the Kaurna representatives urge SA Water to avoid site three, and to utilise either Sites one or two. Neither sites one or two, both distant from the river, cause any cultural concerns.
Please contact me if you require any additional information in relation to these heritage survey results.
Yours sincerely,
Associate Professor Neale Draper Principal Heritage Consultant Neale Draper & Associates Pty Ltd
SA Water Northern Adelaide Irrigation Scheme
Potential Aboriginal Heritage Discovery Identified During Construction (by construction work crew or KNCHA Monitor)
Potential Discovery is reported immediately to Construction Supervisor, who reports it to SA WATER Work stops within 50 m of the potential discovery location and it is secured from further disturbance. The location and circumstances of the discovery are recorded, including photos with scale for assessment by the heritage consultant.
Assessment of Potential Discovery: SA Water notifies Heritage Consultant (cc. KNCHA) by phone / email and sends photographs of discovery and context. Heritage Consultant advises SA Water and KNCHA on identification of discovery. Heritage Consultant liaises with SAW & KNCHA if site inspection is required.
Site confirmed not to be an Site inspection required to complete Assessment: Joint site
Aboriginal site inspection by SA Water, KNCHA, and Heritage Consultant. Contractor reps may attend.
SA Water advises Contractor when works may resume at Site confirmed to be an Aboriginal Heritage site: If human skeletal location, Heritage Consultant remains discovered SA Water informs SA Police & DSD-AAR. records results.
Site can be avoided during construction Site cannot be avoided during construction activities activities
Major Heritage Discovery (large/complex Minor Heritage Discovery (isolated archaeological site and/or one or more artefacts or small archaeological site). burials). Consultation meeting to develop Heritage Consultant and KNCHA reps record and authorise heritage impact mitigation finds, with SAW protect find if possible, or process for the discovery (e.g. pipeline salvage if necessary. relocation, archaeological salvage, repatriation).
Implement approved heritage mitigation measures. Heritage Consultant & KNCHA advise SA Water when required actions are complete. Heritage Consultant provides report on mitigation process & results to SA Water, KNCHA, & DSD AAR.
Return to Work: SA Water representative will authorise return to work to Construction Supervisor.
Figure 3-1: Flow Chart of Heritage Discovery Procedures, NAIS CHMP. Yellow sections require action from the Contractor; blue sections are managed by SA Water.
SAW01 Page | 28 N Development No. / G / 18 W E Adelaide Plains Council
F216939 Proposed Plan of Division S Allotment 118 in F216939 Hundred of Port Gawler 587.51 in the area named
136.17 KORUNYE
2 PT CT 5662/19 136.17 8.000 ha
0 30 60 120 180 240 300 PORTER ROAD 587.51 m 1:3000 @ A3
300 1 17.63 ha 300
Dimensions and areas are subject to survey.
© ALEXANDER & SYMONDS PTY. LTD. Original Sheet Size A3 587.51
LICENSED SURVEYOR
166.73 REF: A053018.0000 DWG NO.: A053018PROP(A) 3 166.73 9.796 ha REVISION: A RHF 12.06.2018 PORT WAKEFIELD HIGHWAY Alexander & Symonds Pty Ltd 11 King William Street Kent Town, South Australia 5067 11.67 PO Box 1000 Kent Town, SA 5071 587.51 DX 209 ABN 93007 753 988
T (08) 8130 1666 F (08) 8362 0099 HART ROAD W www.alexander.com.au E [email protected] Alexander Symonds + Property + Land Development + Surveying + Construction + Mining + Consultants + Spatial Information Management +
SCAP Agenda Item 3.1.1
25 October 2018
ATTACHMENT 4
DEVELOPMENT PLAN PROVISIONS
MALLALA COUNCIL DEVELOPMENT PLAN CONSOLIDATED – 20 FEBRUARY 2018
PRIMARY PRODUCTION ZONE OB 1 The long term continuation of primary production.
OB 2 Economically productive, efficient and environmentally sustainable primary production.
OB 7 Development that contributes to the desired character of the zone.
PDC 12 Development should not be undertaken unless it is consistent with the desired character for the zone.
PDC 15 Development should provide an access way of at least 3 metres wide that provides access for emergency vehicles to the rear of the allotment.
Desired Character This zone covers the majority of the council area, excluding the townships and several special zones. Farming activities are characterised by irrigated horticulture to the south of the council area and livestock grazing and cereal cropping in other areas which are generally farmed on relatively large land holdings. Other land uses include intensive animal keeping, rural value adding, the livestock markets, bulk grain storage, a major landfill, composting, and bulk grain storage. This zone will continue to accommodate grazing, cropping and intensive animal keeping and actively encourage the growth of intensive horticultural (including enclosed horticulture), land-based inland aquaculture and associated value adding where able to readily access suitable fit-for-purpose water. This zone will also accommodate the development of abattoirs, meat processing, cold storage, and other forms of compatible development, which contribute to agricultural productivity and the rural character and are located outside of land subject to flooding.
A proliferation of intensive development and occupation of the zone by incompatible land uses may threaten its proper functioning and render the rural landscape susceptible to competing demands and undesirable change. To maintain the agricultural importance and stability of the zone, it is vital that the size of the land holdings is not significantly reduced (unless otherwise stated in the Policy or Precinct Areas), or dwelling densities increased. Future pressures for development in the zone will not result in the conversion of agricultural land to less productive uses.
To promote consistency with the Environment and Food Production Areas (EFPA) established under the Planning, Development and Infrastructure Act, 2016, as at 1 April 2017, no new allotments will be permitted to contain dwellings for residential purposes. Caretaker’s / manager’s residences, if associated with a genuine horticulture land use, will be assessed on their merits (excluding where located within Precinct 5 Horticulture).
Rural-based activities will continue to operate and expand, provided sound management techniques can be demonstrated, and the long-term productivity of the land is ensured. Opportunities for the diversification of the rural sector will be expanded and developed in appropriate locations. Value-adding industries will be developed to complement and expand upon the existing rural activities within the region.
Although some of the land has long been cleared for agricultural production and grazing, significant tracts of native and other significant vegetation still remain. The small areas of
1
SCAP Agenda Item 3.1.1
25 October 2018
bushland scattered throughout the district, notably those located on sand ridges in the eastern portion of the zone and the landscapes abutting and adjacent to the banks of the Light River and Gawler River, are particularly important features needing protection. These features will be preserved and further enhanced by supplementary planting.
HORTICULTURE POLICY AREA 3 OB 1 A policy area primarily for horticulture.
OB 2 The establishment of appropriately scaled industries for washing, processing and packaging primary produce, and servicing and supporting horticulture.
Desired Character A threat to the long-term economic viability of the policy area is the conversion of horticultural land to residential / rural living activities. These activities are incompatible with horticulture production (e.g. due to noise, spray drift etc.) and often raise the cost of production for those remaining. Land division will only occur where the allotment is serviced with a guaranteed water supply of sufficient quantity and quality to sustain a genuinely commercial horticultural or land-based inland aquaculture development. Caretaker’s / manager’s residences within the policy area (excluding Precinct 5 Horticulture) will only occur if they are associated with sufficient buffers (landscape and/or separation distances) from existing or approved horticulture. Caretaker’s / manager’s residences must be sited on land that has an existing commercial horticultural activity.
To realise the area’s full potential for horticulture development will require the provision of adequate water supply, the development of sealed road linkages, plus adequate power supply.
Portions of the zone are subject to inundation by floodwaters from the Gawler River and Light River. New development will not materially increase the potential for on and off-site flooding. Buildings and structures will be located and designed to have regard to flooding. The zone will be developed in a way that minimises potential amenity impacts on sensitive land uses.
GENERAL SECTION
Infrastructure OB 1 Infrastructure provided in an economical and environmentally sensitive manner.
OB 2 The visual impact of infrastructure facilities minimised.
Hazards OB 1 Maintenance of the natural environment and systems by limiting development in areas susceptible to natural hazard risk.
OB 4 Development located and designed to minimise the risks to safety and property from flooding.
OB 6 Development located to minimise the threat and impact of bushfires on life and property.
PDC 2 Development located on land subject to hazards as shown on the Overlay Maps - Development Constraints should not occur unless it is sited, designed and undertaken with appropriate precautions being taken against the relevant hazards.
PDC 4 Development should not occur on land where the risk of flooding is likely to be harmful to safety or damage property.
PDC 7 Development, including earthworks associated with development, should not do any of the following:
2
SCAP Agenda Item 3.1.1
25 October 2018
(a) impede the flow of floodwaters through the land or other surrounding land (b) increase the potential hazard risk to public safety of persons during a flood event (c) aggravate the potential for erosion or siltation or lead to the destruction of vegetation during a flood (d) cause any adverse effect on the floodway function (e) increase the risk of flooding of other land (f) obstruct a watercourse.
Natural Resources OB 4 Natural hydrological systems and environmental flows reinstated, maintained and enhanced while providing allowances for flood mitigation measures.
OB 6 Development sited and designed to: (a) protect natural ecological systems (b) achieve the sustainable use of water (c) protect water quality, including receiving waters (d) reduce runoff and peak flows and prevent the risk of downstream flooding (e) minimise demand on reticulated water supplies (f) maximise the harvest and use of stormwater (g) protect stormwater from pollution sources (h) maintain natural water storage capacity, whether temporary or permanent
OB 7 Storage and use of stormwater which avoids adverse impact on public health and safety.
PDC 2 Development should ensure that South Australia’s natural assets, such as biodiversity, water and soil, are protected and enhanced.
PDC 3 Development should not significantly obstruct or adversely affect sensitive ecological areas such as creeks, wetlands, estuaries and significant seagrass and mangrove communities.
PDC 6 Development should be designed to maximise conservation, minimise consumption and encourage reuse of water resources.
PDC 8 Development should be sited and designed to: (a) capture and reuse stormwater, where practical on site (b) minimise surface water runoff (c) prevent soil erosion and water pollution (d) protect and enhance natural water flows (e) protect water quality by providing adequate separation distances from watercourses and other water bodies (f) not contribute to an increase in salinity levels (g) avoid the water logging of soil or the release of toxic elements (h) maintain natural hydrological systems and not adversely affect: (i) the quantity and quality of groundwater and/or surface waters (ii) the depth and directional flow of groundwater (iii) the quality and function of natural springs.
PDC 10 Development should include stormwater management systems to protect it from damage during a minimum of a 1-in-100 year average return interval flood event.
PDC 11 Development should have adequate provision to control any stormwater over-flow runoff from the site and should be sited and designed to improve the quality of stormwater and minimise pollutant transfer to receiving waters.
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SCAP Agenda Item 3.1.1
25 October 2018
PDC 21 Development should ensure watercourses and their beds, banks, wetlands and floodplains are not damaged or modified and are retained in their natural state, except where modification is required for essential access, maintenance purposes or flood mitigation measures.
PDC 33 Development should retain existing areas of native vegetation and where possible contribute to revegetation using locally indigenous plant species.
Interface Between Land Uses OB 1 Development located and designed to minimise adverse impact and conflict between land uses.
OB 3 Protect desired land uses from the encroachment of incompatible development.
PDC 2 Development should be sited and designed to minimise negative impacts on existing and potential future land uses desired in the locality.
PDC 12 Development with the potential to emit harmful or nuisance-generating air pollution should incorporate air pollution control measures to prevent harm to human health or unreasonable interference with the amenity of sensitive uses within the locality.
PDC 15 Traffic movement, spray drift, dust, noise, odour and the use of frost fans and gas guns associated with primary production should not lead to unreasonable impact on adjacent land uses.
Landscaping, Fences and Walls OB 1 The amenity of land and development enhanced with appropriate planting and other landscaping works, using locally indigenous plant species where possible.
OB 2 Functional fences and walls that enhance the attractiveness of development.
PDC 2 Landscaping should: (a) include the planting of locally indigenous species where appropriate (b) be oriented towards the street frontage (c) result in the appropriate clearance from powerlines and other infrastructure being maintained
Orderly and Sustainable Development OB 2 Development occurring in an orderly sequence and in a compact form to enable the efficient provision of public services and facilities.
OB 3 Development that does not jeopardise the continuance of adjoining authorised land uses.
OB 4 Development that does not prejudice the achievement of the provisions of the Development Plan.
PDC 1 Development should not prejudice the development of a zone for its intended purpose.
PDC 2 Land outside of townships and settlements should primarily be used for primary production and conservation purposes.
PDC 3 The economic base of the region should be expanded in a sustainable manner.
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SCAP Agenda Item 3.1.1
25 October 2018
Waste OB 1 Development that, in order of priority, avoids the production of waste, minimises the production of waste, reuses waste, recycles waste for reuse, treats waste and disposes of waste in an environmentally sound manner.
PDC 1 Development should be sited and designed to prevent or minimise the generation of waste (including wastewater) by applying the following waste management hierarchy in the order of priority as shown below: (a) avoiding the production of waste (b) minimising waste production (c) reusing waste (d) recycling waste (e) recovering part of the waste for reuse (f) treating waste to reduce the potentially degrading impacts (g) disposing of waste in an environmentally sound manner.
PDC 2 The storage, treatment and disposal of waste materials from any development should be achieved without risk to health or impairment of the environment.
Design and Appearance OB 2 Roads, open spaces, buildings and land uses laid out and linked so that they are easy to understand and navigate.
PDC 13 Buildings, landscaping, paving and signage should have a co-ordinated appearance that maintains and enhances the visual attractiveness of the locality
Transport and Access PDC 25 Development should have direct access from an all weather public road.
PDC 26 Development should be provided with safe and convenient access which: (a) avoids unreasonable interference with the flow of traffic on adjoining roads (b) provides appropriate separation distances from existing roads or level crossings (c) accommodates the type and volume of traffic likely to be generated by the development or land use and minimises induced traffic through over-provision (d) is sited and designed to minimise
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