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Appendix G - Bushfire Hazard Assessment
Attached to the e-mail MCU17/0551 - Information Response - 20 Trading Post Rd Cooroy.
19 & 20 Trading Post Road Cooroy QLD March 2018 Bushfire Hazard Assessment Report which is a lower fuel load than the maximum potential for tall wet eucalypt forest. The vegetation in the assessment area is located on flat land and the 1:20 year Fire Danger Index is 47, relatively low for South-East Queensland. The following vegetation is found to be low threat and low hazard vegetation that is excluded from classification for hazard: -The subject site has been substantially cleared, with isolated trees and shrubs retained. The area has nil to very low tree cover and low hazard range highly discontinuous fuels. The balance of the site will be substantially cleared as part of the development. All parts of the site are excluded as low threat vegetation per AS 3959-2009, Clause 2.2.3.2(f). -Adjoining cleared and developed areas of all Palm Lake Resort land within the assessment area. The area has managed, cultivated garden areas or cleared land for development that is non-vegetated. Areas mapped in the bushfire overlays in this area are now identified to be cleared land and substantially non-vegetated. The vegetation is low hazard range and is excluded as low threat vegetation per AS 3959-2009, Clause 2.2.3.2(e) and (f). -Adjoining urban residential pocket south-east of the site has established dwellings with managed urban class garden area. The vegetation is excluded as low hazard range fuels with low overall tree cover and low threat vegetation per AS 3959-2009, Clause 2.2.3.2(f). -Pocket of recreational parkland south-east and narrow strip of trees/shrubs bordering the pathway is excluded as managed urban class vegetation with low to moderate tree cover and discontinuous fuels in the surrounds. -Strip of trees around 13m wide on adjoining land that abuts the site, and extends along the perimeter of Palm Lake Resort development. The tree dominated vegetation is non-remnant and is bounded by cleared land and mowed grass in managed low fuel condition, and cleared land at the south side. Narrow strip of trees are excluded per SPP 2016 Technical Manual and Leonard & Opie (2017). In accordance with SPP 2017 methodology, narrow strips and small patches of vegetation are filtered and patched to surrounding Vegetation Hazard Classes. This filtering out of small, tree dominated strips and patches that are surrounded by discontinuous fuel areas, better estimates fire behaviour and the likely intensity of running fires. The fragmentation and discontinuity of fuels is considered to not support a fireline intensity that is likely to present a significant threat to property and life (ie. >4,000kW/m per SPP 2017). Fireline intensity less 4,000kW/m is Low Hazard range. Calculations for the narrow strip by fireline intensity equations would overestimate the level of risk (Leonard & Opie 2017). The strip is not classified for hazard on SPP 2017 Bushfire prone areas 4 mapping, other than a broader pocket which has since been cleared. Filtering and downgrading this Page Brisbane Bushfire Consulting Pty. Ltd. Bushfire Consultant, Architect BOAQ ARBV P.O. Box 219, Point Lookout Qld 4183 [email protected] brisbanebushfire.com.au Mob 0490 494 111
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