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Parkes Water Treatment Plant Site Selection Water Treatments Plant (WTP),High Level Reservoir (HLR) 1.

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Presentation on theme: "Parkes Water Treatment Plant Site Selection Water Treatments Plant (WTP),High Level Reservoir (HLR) 1."— Presentation transcript:

1 Parkes Water Treatment Plant Site Selection Water Treatments Plant (WTP),High Level Reservoir (HLR) 1

2 Site Layout Options Assessments Purpose To review the site selection process that was carried out for the new Water Treatment Plant and High Level Water Reservoir. To review the constraints and opportunities of the proposed sites for new Water Treatment Plant, High Level Reservoir and water pipelines. To justify the preferred sites selected against relevant environmental, social and economic assessment criteria.

3 Site Layout Options Assessments WTP-Option 1 22 AUGUST 2014

4 Sites Layout Options Assessments Project AspectRiskComments Land Title /Ownership -Owner - Parkes Shire Council on Lot 7313 DP with batch settling ponds on part Lot 7313 DP Lot 3 DP Contour RL -Approx at the ground 374mRL Existing Land-use -Disused Rifle Range and Travelling Stock Reserve LEP / Zoning -Land is zoned RU1 Primary Production under Parkes LEP LEP/ Overlays -Nil Statutory Approvals -REF - Part 5 EP&A Act 1979, S60 Approval - LGA 1993, EPL – POEO Act 1997 Adjoining Land-use -RU1 Primary Production zoned land to the south, east and north-east and R5 Large Lot Residential zoned land to the north Noise / Vibration -Noise impact potential at construction stage and operation stage Air quality -Potential for dust generation at construction stage from excavation equipment and vehicle movements NEW WATER TREATMENT PLANT 22 AUGUST 2014 Option 1-WTP - Footprint area and Proposed ponds.

5 Site Layout Options Assessments 22 AUGUST 2014

6 Sites Layout Options Assessments Project AspectRiskComments Batch settling ponds -Required to manage backwash process has less room Power Supply -The WTP will require 415/240 Volts, 3 ‐ phase, 50 Hz power supply. Road Access -New road access required from Charles Rigg Avenue – 700 metres of road construction Pipelines -Augmentation as per attached map,has more pipe laying Bulk Earthworks -For WTP and batch settling ponds Geotechnical -Unknown at this stage Aboriginal Heritage -Low potential for Aboriginal sites Other Heritage -Past gold mining, rifle range and rural activities Native Vegetation / Habitat -Low potential for Threatened Species impacts NEW WATER TREATMENT PLANT 18 MARCH 2014 Option 1-WTP - Footprint area and Proposed ponds

7 Sites Layout Options Assessments Project AspectRiskComments Hydrology -Not located in sensitive aquifer or natural waterway. No visible evidence of salinity Contamination -Located on or near the 'back butt' to the rifle range. Potential for heavy metals from past mining and rifle range activities Landscaping -New landscaping around perimeter of WTP, roads and batch settling ponds NEW WATER TREATMENT PLANT 18 MARCH 2014 Option 1-WTP - Footprint area and Proposed ponds.

8 Site Layout Options Assessments WTP-Option 2 22 AUGUST 2014

9 Sites Layout Options Assessments Project AspectRiskComments Land Title/Ownership -WTP to be located on Lot 7313 DP with batch settling ponds on Part Lot 7313 DP Lot 3 DP Parkes Shire Council Contour RL/ AHD - AHD 378 mRL Existing Land-use -Disused Rifle Range and Travelling Stock Reserve LEP/ Overlays -Part of the site of the WTP is located in the Parkes Radio Telescope buffer LEP / Zoning -Land is zoned RU1 Primary Production under Parkes LEP 2013 Statutory Approvals -REF - Part 5 EP&A Act S60 Approval - LGA EPL – POEO Act 1997 Adjoining Land-use -RU1 Primary Production zoned land to the south, east and north-east and R5 Large Lot Residential zoned land to the north-west Noise / Vibration -Option 2 WTP site is more isolated from adjoining residences and Large Lot Residential land parcels and partly screened by a low lying ridge and has less potential to generate noise nuisance. Noise assessment is required to verify noise impacts (if any) Air quality -Both options have potential to generate dust at construction stage. A robust system of dust suppression management is required at construction stage. All permanent roads to be sealed and the site landscaped at construction stage Lighting Impacts -Option 2 WTP site is more isolated from adjoining residences and Large Lot Residential land parcels and partly screened by a low lying ridge and has less potential to generate light nuisance NEW WATER TREATMENT PLANT 18 MARCH 2014 Option 2-WTP - Footprint area and Proposed ponds

10 Sites Layout Options Assessments Project AspectRiskComments Batch settling ponds -Both options have potential for aesthetic impacts such as impacted views. Option 2 likely provides more room for a sensitive batch settling pond design, including additional separation between existing / future residences and site landscaping Power Supply -The WTP will require 415/240 Volts, 3 ‐ phase, 50 Hz power supply. -Augmentation of the centralised overhead power supply is required Road Access -New road access required from Webb Street – 250 metres of road construction -Option 2 likely provides a less expensive road access to WTP Pipelines -Option 2 likely provides a less expensive pipeline augmentation program Bulk Earthworks - which is located on slight slope and is constrained / separated by a drainage line. More earthworks for WTP building envelope are required in Option 2. Option 1 likely provides a less expensive bulk earthworks program Geotechnical -Extent of rock, clay materials for use in batch settling ponds is unknown at this stage, however both options appear to be conducive to construction of WTP facilities Aboriginal Heritage -Land in both options is highly disturbed and not close to waterways / ridgelines. An archaeological investigation is required to determine impacts (if any) Other Heritage -Site is associated with historical themes identified in Parkes Shire Thematic History, A heritage investigation is required to determine impacts (if any) NEW WATER TREATMENT PLANT 18 MARCH 2014 Option 2-WTP - Footprint area and Proposed ponds

11 Sites Layout Options Assessments Project AspectRiskComments Native Vegetation / Habitat -Low potential for Threatened Species impacts -Site is associated with historical themes identified in Parkes Shire Thematic History, A heritage investigation is required to determine impacts (if any) Hydrology -Option 2, which is located on slight slope and is constrained/separated by a drainage line. More earthworks for WTP building envelope in Option 2 are likely required. Option 1 likely provides a less expensive drainage management program at bulk earthworks stage Contamination -The WTP location in Option 2 is setback from rifle range activities. Investigation required on both sites to determine site contamination (if any) Landscaping -Option 2 provides more room for a sensitive batch settling pond design, including additional separation between existing / future residences and site landscaping NEW WATER TREATMENT PLANT 18 MARCH 2014 Option 2-WTP - Footprint area and Proposed Lagoons.

12 Site Selection / Options Assessments Project AspectRiskComments Option 1 (WTP) -The WTP location in Option 1 is flatter than Option 2, which is located on slight slope and is constrained/separated by a drainage line. More earthworks for WTP building envelope in Option 2 are likely required. Option 1 likely provides a less expensive drainage management program at bulk earthworks stage Option 2( WTP) -site is more isolated from adjoining residences and Large Lot Residential land parcelsand partly screened by a low lying ridge. Option 2 also provides more room for a sensitive batch settling pond design, including additional separation between existing / future residences and site landscaping -site is more isolated from adjoining residences and Large Lot Residential land parcels and partly screened by a low lying ridge and has less potential to generate noise nuisance. Noise assessment is required to verify noise impacts (if any) -site is more isolated from adjoining residences and Large Lot Residential land parcels and partly screened by a low lying ridge and has less potential to generate light nuisance -likely provides a less expensive road access to WTP -provides more room for a sensitive batch settling pond design, including additional separation between existing / future residences and site landscaping NEW WATER TREATMENT PLANT 18 MARCH 2014 SITE ANALYSIS CONCLUSION

13 Site Layout Options Assessments HIGH LEVEL RESERVOIR (HLR)- OPTIONS 22 AUGUST 2014

14 Sites Layout Options Assessments Project AspectRiskComments Land Title/ Ownership -L Reservoir located on Lot 7018 DP and pipeline on Lot 7313 DP Land held in free hold title by Council. Requires consolidation of titles AHD/Contour RL -The hydraulic modelling requires a Top Water Level of RL 430. The floor level of the building envelope for the reservoir in this option is located at RL 426, thus requiring a tank at least 4-5 metres high to obtain required head Existing Land-use -Vacant, bushland habitat, Mountain Bike Trails -Careful management of land at construction stage is required to preserve bushland amenity and manage impacts on flora and fauna LEP / Zoning -Land is zoned RU1 Primary Production under Parkes LEP 2013 LEP/ Overlays -Both options require consideration of possible impacts on Parkes Radio Telescope. Preliminary consultation with ATNF reveals need to consult about selection of electronics / telemetry to check possible interference with Telescope Parkes Airport OLS -Not affected by Obstacle Limitation Surface Map developed for the Parkes Airport Statutory Approvals -REF - Part 5 EP&A Act 1979 Adjoining Land-use -RU1 Primary Production zoned land adjoins HL Reservoir site. Existing dwelling is setback approximately 70 metres from HL Reservoir site Noise / Vibration -Noise will be generated at construction stage and should not impact on adjoining dwelling Air quality -Potential for minor dust generation at construction stage Lighting Impacts -HL Reservoir will have some lighting that can be turned on for emergency access and maintenance purposes at night NEW 1ML HIGH LEVEL RESERVOIR (HLR) 18 MARCH 2014 Option 1 HLR

15 Sites Layout Options Assessments Project AspectRiskComments Road Access -If practical an access should be provided next to the pipelines to facilitate construction and maintenance of pipelines and reservoir. Access road is approximately 690 metres long Pipelines -Pipelines x 2 required between WTP and HL Reservoir – 690 metres Bulk Earthworks -Option 1 involves more cutting of the HL Reservoir site to accommodate the envelope of the reservoir than Option 2. Protection of habitat and soils is required in both options Geotechnical -Unknown at this stage, however rocks and rock shelves are readily visible Aboriginal Heritage/ Other Heritage -Elevated / isolated Cyprus Pine forest with some isolated Grey Box Eucalypts. No evidence of Aboriginal heritage sites / relics observed/ Past gold mining and rural activities Native Vegetation / Habitat -Elevated / isolated Cyprus Pine forest with some isolated Grey Box Eucalypts, nearby rocky outcrops Hydrology Not located in sensitive aquifer or waterway. No visible evidence of salinity. Steep sections of land subject to soil erosion Contamination -No evidence of past use that may have caused contamination Landscaping -Elevated / isolated Cyprus Pine forest with some isolated Grey Box Eucalypts NEW 1ML HIGH LEVEL RESERVOIR(HLR) 18 MARCH 2014 Option 1 HLR

16 Sites Layout Options Assessments Project AspectRiskComments Land Title/ Ownership -HL Reservoir located on Lot 7018 DP and pipeline on Lot 7313 DP Parkes Shire Council Contour RL -The hydraulic modelling requires a Top Water Level of RL 430. The floor level of the building envelope for the reservoir in this option is located at RL 432. The tank is therefore not bound by any height criteria to obtain required head Existing Land-use -Vacant, bushland habitat, Mountain Bike Trails -Careful management of land at construction stage is required to preserve bushland amenity and manage impacts on flora and fauna LEP / Zoning -Land is zoned RU1 Primary Production under Parkes LEP 2013 LEP /Overlays -Land affected by any Terrestrial Biodiversity Overlay and Parkes Radio Telescope buffer Parkes Airport OLS -Not affected by Obstacle Limitation Surface Map developed for the Parkes Airport Statutory Approvals -REF - Part 5 EP&A Act 1979 Adjoining Land-use -RU1 Primary Production zoned land adjoins HL Reservoir site. Existing dwelling is setback approximately 30 metres from HL Reservoir site Noise / Vibration -Noise will be generated at construction stage and potentially at operation stage and may impact on adjoining dwelling Air quality -Potential for minor dust generation at construction stage Lighting Impacts -Option 1 HL Reservoir site is better screened from views from Parkes and is setback further away from nearby residence and will not lead to lighting impacts when emergency lights are turned on NEW 1ML HIGH LEVEL RESERVOIR(HLR) 18 MARCH 2014 Option 1 HLR

17 Sites Layout Options Assessments Project AspectRiskComments Road Access -The access route to the HL Reservoir is difficult and will need to negotiate a rocky timbered spur to the west of the HL Reservoir. Option 1 requires less road works and likely provides a less expensive option Pipelines -Pipelines x 2 required between WTP and HL Reservoir – 750 metres Bulk Earthworks -Cut for HL Reservoir envelope (approximately 500mm). Some excavation will also be required for pipeline and access -Option 2. Protection of habitat and soils is required in both options. Geotechnical -Unknown at this stage, however rocks and rock shelves are readily visible Aboriginal Heritage/ Other Heritage -Elevated / isolated Cyprus Pine forest with some isolated Grey Box Eucalypts. No evidence of Aboriginal heritage sites / relics observed Native Vegetation / Habitat -Elevated / isolated Cyprus Pine forest with some isolated Grey Box Eucalypts, nearby rocky outcrops Hydrology -Not located in sensitive aquifer or waterway. No visible evidence of salinity. Steep sections of land subject to soil erosion Contamination -No evidence of past use that may have caused contamination Landscaping -Elevated / isolated Cyprus Pine forest with some isolated Grey Box Eucalypts NEW 1ML HIGH LEVEL RESERVOIR(HLR) 18 MARCH 2014 Option 1 HLR

18 Site Layout Options Assetments Project AspectRiskComments Option 1 -Option 1 HL Reservoir site is setback further away from nearby residence to the north-east. -The hydraulic modelling requires a Top Water Level of RL 430 ( Ground RL 426) -Additional landscaping is not required for Option 1. Additional landscaping may be required for Option 2 to provide additional screening of reservoir -Both options require consideration of possible impacts on Parkes Radio Telescope. Preliminary consultation with ATNF reveals need to consult about selection of electronics / telemetry to check possible interference with Telescope -Less access route and option 1 likely provides a less expensive to augmenting pipes -Site less affected by any Terrestrial Biodiversity Overlay and Parkes Radio Telescope buffer -Less earthworks Option2 -Both options require consideration of possible impacts on Parkes Radio Telescope. Preliminary consultation with ATNF reveals need to consult about selection of electronics / telemetry to check possible interference with Telescope -Additional landscaping is not required for Option 1. Additional landscaping may be required for Option 2 to provide additional screening of reservoir -Higher access route and option 2 likely provides a higher expensive to augmenting pipes -Site higher affected by any Terrestrial Biodiversity Overlay and Parkes Radio Telescope buffer -Higher earthworks -The hydraulic modelling requires a Top Water Level of RL 430 ( Ground RL 432) NEW WATER TREATMENT PLANT 18 MARCH 2014 HLR Location

19 Site Layout Options Assortments NEW WATER TREATMENT PLANT 18 MARCH 2014 END


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