Warrawee Substation - Review of Environmental Factors

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The proposalBuilding formFacilitiesadjoining thebuildingUtilityconnectionsStormwatercontrols anddrainageLightingSecurityThe design provides for a skillion roof to Brentwood Avenue tovisually balance the narrow building and the relatively tall walls.Walls are face brick and would include carefully locatedpenetrations for doors and ventilation louvres. It is proposed thatexternal face bricks would be selected for resistance to graffiti,and that mortar joints would be struck flush to facilitate cleaning.A retaining wall is required at the southern end to allow evengrade levelling of the site.Transformer yardLink yardConcrete hardstand surrounding the building, providingparking and loading/unloading areas for service vehiclesTransformer and reactor compounds are proposed asconcrete blockworkAn undertrack crossing to allow conduits to be installedConnection to Council’s stormwater systemConnection to sewerRelocation of existing RailCorp services within the rail corridorThe transformer and reactor would be located within a bundedarea to be constructed in accordance with relevant AustraliaStandards and Material Safety Data Sheets. This would ensurethat any spills are contained. The bunded area would contain anoil/water separator to allow the oil to be selectively removed anddisposed of.An oil/water separator would be installed on the inlet to the pitthat would capture runoff from the bunded areas. Water wouldbe discharged to the stormwater network and oil from the pitwould be pumped out for offsite disposal.A new drainage system is proposed to divert the existing opendrain past the new substation building.External security lighting would be installed in a manner whichminimises light spill to areas beyond the site boundary.Security fencing around the substation and the bunded yardswould be compliant to RailCorp standards for substation fencing.Fencing around the substation would be 2.7 metres tall andwould be constructed of weld mesh panels. The fencing wouldbe topped with barbed tape (at bunded areas) or croctop toppingfor the remaining areas. All steel fence members are galvanisedand then finished in black powercoat.Warrawee Substation Project/Review of Environmental FactorsPage 12 of 64
The proposalAccessTwo accesses to the site from Brentwood Avenue would beprovided. These would be two concrete driveways. The southernaccess would provide access to Bunded Yard No. 1 and thesubstation building. The northern access would provide accessto Bunded Yard No. 2 and the substation building.Fuel/chemicalstorage on siteApproximately 3,100 litres of oil would be stored within thereactor.Approximately 11,000 litres of oil would be contained withinthe transformers.2.1.2 Construction activitiesConstruction methodologyThe indicative construction methodology includes the following: Site establishment (Scenario A)– Service relocation – A number of services currently traverse the site and needto be relocated either to enable construction compound to be established or tominimise potential disruptions to the services during the main constructionworks.– Site establishment/enabling works – Involves the establishment of theconstruction compound (see below for description of the compound). Thiswould also include the installation of safety fencing around the constructionarea.Piling and retaining wall works (Scenario’s B and C) – Involves the use of pilingrigs to construct the retaining walls required to hold back the existing railembankment. Retaining walls would be constructed within the embankment, withthe embankment then to be excavated in the next stage.Earthworks (Scenario D) – Involves excavating the substation site within theretaining wall structures to level the ground for construction of the substation andassociated facilities. These works would generally be undertaken usingexcavators.Pit and slab construction (Scenario E and F) – Involves constructing the slab andpits for the new substation and associated yards.Substation construction (Scenario G) – Involves the construction of the substationbuilding and the associated bunded yards atop of the slab and pits constructed inthe previous stage of construction (see above).Road pavements (Scenario H) – Involves the construction of the pavement toprovide access to the two access gates on Brentwood Avenue. As shown in Table2.3 standard paving equipment would be used during this stage.Electrical works (Scenario I) – Involves the fit out of both the indoor and outdoorcomponents of the substation site. This stage would include the connect of thesubstation to the network during a rail possession.Warrawee Substation Project/Review of Environmental FactorsPage 13 of 64
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Page 8 and 9: Preliminaries1.5 Statutory requirem
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REF determination6. REF determinati
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References7. ReferencesChapman, G.A
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ReferencesAppendix BFlora and Fauna
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trees, known food tree species, wet
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SpeciesControlcategoryLegal Require
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Law 2008). The species roosts and b
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Fauna species listFamily Scientific
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Campbell, S. (2011). Ecological spe
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ReferencesAppendix COperational noi
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APPENDIX BMEASURED ONE THIRD OCTAVE
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ReferencesAppendix DAHIMS Search Re
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AHIMS Basic SearchPage 1 of 1Welcom
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