SUPERSEDED Reference Document Bushfire Hazard Assessment & Management Plan v 2 June 2024 MCU24 0084 (1)

Bushfire
Lot 4 on

Hazard Assessment & Management Plan v2 NCES REF: J001313
RP160124 — 658 Louis Bazzo Dr, Ringtail Creek QLD 4565

 

of VHC’s!;

Subdividing the identified vegetation hazard classes into bushfire hazard sub-units based on
slope differences and vegetation hazard classes. All upslope and across slope vegetation
units are allocated an underlying slope of 1 degree as per methodology prescribed within
Queensland Fire and Emergency Services - (2019) Planning for Bushfire Resilient
Communities. The maximal slope recorded within 25m x 25m grids within the VHC’s is
adopted as the effective slope underlying the VHC. A conservative approach is adopted
where multiple slopes persist within VHC’s;

Assigning SPP Potential Bushfire Intensity classes to the sub-units;

Application of 100m Potential Impact Buffers to the amended sub-units to derive an overall
Local Hazard Area Map.

3.2 Vegetation Hazard Classes

The fo
within

llowing vegetation hazard classes (classified in accordance with QFES (2019)) were identified
the assessment area which includes a 150m buffer surrounding the site (proposed wedding

marquee and access):

Vegetation Hazard Class 2.1 — Complex to simple, semi-deciduous mesophyll to notophyll
vine forest;

Vegetation Hazard Class 8.1 — Wet eucalypt tall open forest;

Vegetation Hazard Class 9.1 — Moist to dry eucalypt open forest on coastal lowlands and
ranges;

Vegetation Hazard Class 24.1 — Acacia open forest on residuals;

Vegetation Hazard Class 36.1 — Exotic & hardwood plantations;

Vegetation Hazard Class 38.4 — Continuous dryland cropping and horticulture;
Vegetation Hazard Class 39.2 — Low to moderate tree cover in built-up areas;
Vegetation Hazard Class 40.4 — Continuous low grass or tree cover; and

Vegetation Hazard Class 43.6 — Water bodies or very low vegetation cover.

The characteristics of each observed vegetation hazard class are described in Appendix 2 whilst
Plas BFO1a and Plas BF01b — Vegetation Hazard Classes depicts their distribution across the
assessment area.

’ The patch and corridor filtering process to remove or downgrade hazard levels of small patches and narrow corridors involves the
following three stages:

© 2024

Document Set ID: 23422887

Merging small patches of a single Vegetation Hazard Class less than 0.5 ha;
Merging small Vegetation Hazard Class patches between 0.5 and 1 ha with higher or moderate fuel loads (greater than 8
tonnes/ha); and

Removing narrow corridors of vegetation less than 50m wide through a process of patch erosion and dilation. These small
patches are merged with surrounding vegetation by allocating a patch to the Vegetation Hazard Class that is most common to
the patch boundary (Leonard ef a/., 2017).

 

Version: 3, Version Date: 14/01/2025