3 Sites 90 Babbage Rd Attach 3 Bushfire Assessment

8/13/2019 3 Sites 90 Babbage Rd Attach 3 Bushfire Assessment

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Ku-ring-gai CouncilBushfire, Hydraulic, Riparian and Ecology Studiesfor 90 Babbage Road, Roseville Chase

27 March 2013610.112418 90 Babbage Road, Roseville

Chase 20130327.docx

SLR Consulting Australia Pty Ltd

Attachment 3 Bushfire Assessment (Bushfire Safety Solutions)

1. Addendum Letter Response to Council Comments

2. Study Report


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_____________________________________________________________________________________________

___________________________________________________________________Steve Parrott Pty Limited - ABN 77 073 153 625

PO Box 7196 Telephone:(02) 9833 7200LPO South Penrith NSW 2750 Facsimile:(02) 4757 1861E-mail: [email protected] Mobile Ph:0419 636 902

SLR Consulting Aust Pty Ltd

Ground Floor2 Lincoln StreetLane Cove NSW 2660

13 March 2012

Reference: Preliminary BAL Assessment No. 90 Babbage Road Roseville Chase NSW2069

Dear Peter,

The proposed building footprint zone was not given a definite building setback off theBabbage Street frontage, the site diagram was indicative only. A setback of any futuredwelling off the road by 12m will have no discernible impact on the design bushfire modelingfor the site, as the options provided particularly to the northern aspect and the adjoining lot isbased on northern elevation separation, not street offset distances.

The BAL FZ rating to the north is predicated on No. 92 not being managed for bushfirehazards and this then produces the BAL FZ rating. Ember protection to the north and for allsubsequent elevations of a dwelling located upon No. 90 Babbage Road would need togenerally comply with AS3959 2009 section 9.5. The ember protection requirements asdescribed in s9.5 of the Standard are generally the same as BAL 29 and BAL 40requirements, it is the construction of the whole window (or door element) that is constructed

slightly differently.

Should the northern lot be managed for the bushfire hazards, the rating may lower to BAL 29and this would result in compliance with section 7.5 (again generally the same across therange of BAL ratings.

The project provided indicative scenarios, and any site specific design would need separateassessment as the location of windows, doors etc and the height of those openings are allfactors that would need consideration.

The fact that an indicative building footprint can be modeled and any of the aspects can beestimated for a particular BAL rating provides a reasonable degree of confidence that anyfuture dwelling can be constructed upon the subject lot and be reasonably protected using the

measures described in AS3959 2009 for ember protection measures.

Yours faithfully,

Steve Parrott FPA Accredited Practitioner - A.No. 16761Bushfire Safety Solutions


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Bushfire Safety Solutions

Bushfire Assessment Specialists

Steve Parrott Pty Limited ACN 073 153 625 ABN 77 073 153 625

Planning for Bushfire Protection Reports - Alternate Building Solutions for Bushfire Building Compliance -

Asset Protection Zone Construction Advice

www.bushfiresafetysolutions.com.au


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Bushfire Safety Solutions is a Corporate Member of the Fire Protection Association of Australia

Bush Fire Engineering, Design, Compliance & Safety.

Bush Fire Engineering Compliance Report

Preliminary BAL AssessmentNo. 90 Babbage Road

Roseville Chase NSW 2069

Date: February 2013

Report No: 2013/29A

Client:

Ku-Ring-Gai CouncilC/- SLR Consulting Aust Pty Ltd

Ground Floor2 Lincoln Street

Lane Cove NSW 2660


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Bush Fire Engineering Compliance Report No. 2013/29A

No 90 Babbage Road Roseville Chase

Page 2 of 19 Bushfire Safety Solutions

BUSH FIRE ENGINEERING COMPLIANCE REPORT

Bush Fire Engineering Design Brief

The following bush fire design brief has been assessed and prepared in accordance withthe deem to satisfy and performance based bush fire design principles as outlined in thefollowing statutory and ancillary compliance provisions applicable to the New SouthWales jurisdiction:

AS 3959 2009 (Amendment 3);

The relevant bushfire protection principles as outlined in Planning for

Bushfire Protection 2006 (and any applicable associated provisions);

The DtS and performance provisions of the Building Code of Australia;

The relevant statutory planning provisions applicable to the developmentslocal government area;

Applicable bush fire engineering principles for bush fire resistant materialsas tested in accordance with AS1530.8 Parts 1 & 2 ( as required);

Relevant fuel loading guidelines as prescribed in PBP 2006 and theVictorian Department of Sustainability & Environment (1999);

Design fire modeling computations as produced by the NBC BushfireCalculator V2.1.

The design brief is applicable to the hypothetical BAL rating of a vacant allotment at Lot119 DP 1100208 No. 90 Babbage Road Roseville Chase. The subject lot is located onthe southern side of Babbage Road and has an indirect bushfire hazard to the north andeast of the allotment.

The subject property, if it were to be developed for residential land use, would be eligibleto be classified as an infill development and as such, any future development upon theland would not be required to provide a fully compliant asset protection zone. In lieu of

the reduced asset protection zone capacity of the subject lot, any building would rely onpassive construction measures that either comply in full with the deem to satisfy (DtS)provisions of AS3959 2009 or have a combination of DtS and performance solutions toachieve a satisfactory level of bushfire protection.

Existing residential development is located to the south, north, east and west of thesubject lot.

Further to the east of the subject property, the land area includes the upper reaches ofMiddle Harbour bordered by a semi continuous foreshore area that is designatedcategory 1 bushfire prone vegetation. A further discussion relating to the local bushfirethreat will analyze the overall bushfire threat level to the subject allotment.


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For the most part, the general location of Babbage Road, Normac Street and AllardAvenue are designated a Bushfire Buffer Zone with category 1 and category 2 bushfire

prone vegetation mapped along the northern and eastern perimeter of Babbage Road,whilst an area along Allard Avenue and Babbage Road has an exposure to category 2bushfire prone vegetation location at the rear of residential properties off Griffith Avenue(Yellow Shaded Area Below).

General Bushfire Prone Mapping Designations Babbage Rd, Normac St & Griffith Ave.

The predominant bushfire threat classification therefore for the majority of residential lotsin and around No. 90 Babbage Road is Bushfire Buffer Zone.

A general assessment of the locality indicates that most residential properties havemanaged land by way of landscaped gardens and hard stand areas for driveway access

and general pathways.

The bushfire hazards that are within 100m of No. 90 Babbage Road are a mix of exoticweeds, exotic shrubs and tree stands together with native eucalypt tree stands. Thegeneral composition of this type of vegetation can produce a variable bushfire event,however for the purposes of bushfire design modeling, the worst case scenario will beassumed for the locality using the forest vegetation classification for any design bushfiremodeling.


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The bushfire design brief has considered the following local environmental conditionsand building design factors in the formulation of the Bush Fire Engineering Compliance

Report:

A Comparative analysis of AS3959 2009 (A3) assessment method 1 and thecomputational design fire modeling as permitted by AS3959 2009 assessmentmethod 2 vide the NBC Bushfire Calculator V2.1 may beundertaken for thepurposes to validate the final BAL rating for the site.

Proposed future building site orientation and external materials; and,

Any other site specific extenuating circumstances relevant to the proposeddevelopment and its capacity to comply with the performance requirements ofPBP 2006.

This report is an opinionof the current hypothetical bushfire threat based on the presentgeneral understanding of bushfire behaviour and the consequences of a bushfire event.

Given that bushfire events are not able to be accurately modeled, the professionalopinion presented in this report provides a guide only as to the potential radiant heat flux(RHF) emission rates that might be expected to be generated by a passing bushfirefront.

Description of Property & Applicant

Applicant Details: Ku-Ring- Gai Council C/- SLR ConsultingAust. Pty Ltd.

Applicant Address: Ground Floor, 2 Lincoln StreetLane Cove NSW 2066

Date of Assessment: 15 February 2013

Property Address: Lot 119 DP 1100208 No 90 Babbage RoadRoseville Chase NSW 2069

Proposed Development Type & Bushfire Certification Category

Future New Dwelling Entitlement;

Certification Category Class 1a Building.


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Other Documents Referenced in the Assessment

Ku-Ring-Gai Council Bushfire Prone Land Maps. Ku-Ring-Gai Council Riparian Policy 2004. Ku-Ring-Gai Council DLEP 218.

Brief for Bush Fire & Riparian Zone Report

Design Fire Analysis

The design bush fire analysis has considered the following criteria:

Most vulnerable exposure is to the east and north of a proposed future dwellingfootprint location including the northern adjoining lot and a large area of

unmanaged bushfire prone vegetation adjacent to Warringah Road locatedapproximately 80m to 90m to the north.

Site slope is deemed down slope off the rear boundary line towards the easterncorner of the subject lot.

Site slope is approximately 200under the bushfire prone vegetation on thenorthern aspect adjoining lot (No. 92 Babbage Road).

Fuel source is deemed to be a mix of forest vegetation and exotic weeds withinthe northern adjoining lot and predominantly forest vegetation to the north of theproposed development site.

The maximum separation between any proposed future dwelling and the bushfireprone vegetation interface is not defined and is subject to a future dwellingdesign for a final BAL rating. For the purposes of design bushfire modeling, a10m separation has been assumed between a potential building footprint and theadjoining bushfire prone vegetation interface.

No. 90 Babbage Road is within a designated Bushfire Buffer Zone locality.

The development land is partly cleared on the upper portions of the subject lot.

The subject development has bushfire threat exposures to the north east of theproposed future development footprint.

The formulation of the maximum BAL rating to each of these aspects will onlyrequire one design fire analysis due to the broad nature of the existing fire front tothe north and north east of the development location.

Overall, the subject lot is a complex of steep down slope portions, lowunderstorey in the higher portions with mostly ferns, vines and exotic weedspecies and scattered eucalypt tree stands.


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The estimated BAL level will require final confirmation once a detailed buildingdesign and site location is finalised.

Bushfire Prone Land Map of General Area

Subject Site Lot 119 No. 90 Babbage Road Roseville Chase

Location of Subject Lot

Bushfire Prone

Vegetation


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Design Bushfire Discussion

Investigations into the hypothetical bushfire threat in the general vicinity of the subject lotindicate that the area has an ad hoc bushfire threat environment.

For the purposes of determining the overall bushfire threat for the area and therelevance of that threat to that of the subject lot, the bushfire threat analysis can bedivided into three bushfire hazards zones:

Zone 1 Foreshore Vegetation from Echo Point Park to the south east of the lot andaround Echo Point;

Zone 2 Adjoining Lot to the north of the subject property; and,

Zone 3 Bushland to the north up to and parallel to Warringah Road.

These zones demonstrate a certain degree of bushfire fuel connection however thevegetation is not completely continuous and has a variable density with associated fuelaccumulation rates.

These bushfire design factors have an influence upon any localized bushfire behaviourthat might generate a radiant heat flux emission rate that is excessive and therefore castdoubt on the viability of the subject property being developed for residential purposes.

Zone 1 Bushfire Threat Analysis - Foreshore Vegetation from Echo Point Park tothe south east of the lot and around Echo Point

Zone 1 Echo Point to the North West along Middle Harbour Foreshore Area

Zone 1


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A bushfire event within Zone 1 is capable of having two main directional pathways totravel along. The first fire pathway is from Echo Point to the north west along the

foreshore vegetation strip towards the subject lot.

The vegetation along the Middle Harbour foreshore is an average 25m to 30m in widthand of variable fuel densities.

A bushfire event in this location would not be expected to generate sufficient radiant heatflux to be a significant threat to residential development north along Babbage Road.

Zone 1 Bushfire Pathway from Echo Point to the North

The second pathway is in the opposite direction to the north travelling bushfire wherebyany bushfire impact would be negligible upon any development situated upon No.90Babbage Road as the bushfire travels east, south east away from the subject lot.

Zone 2 - Adjoining Lot to the North of No.90 Babbage Road

The adjoining lot to No. 90 Babbage Road is a similar lot configuration and is currentlyowned by the State Government. The lot is mapped as being fully bushfire prone withcategory 1 vegetation occupying approximately 98% of the total lot area.

The northern adjoining lot is mostly unmanaged land and could therefore be considereda prominent bushfire threat to any future development upon the subject lot.

The long term bushfire threat from this property is uncertain however, the lot has thepotential to be sold and then developed for residential purposes similar to other adjoiningproperties along Babbage Road.

Managed Land Portion of Foreshore Area

Bushfire Pathway Along Foreshore Area


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This scenario would greatly reduce the overall current bushfire threat to No. 90 BabbageRoad and therefore any development upon No. 90 Babbage Road would only need to

account for the minor bushfire threat to the north east as described in the Zone 1 and apotential threat from the north of the site as discussed further in the Zone 3 bushfirethreat analysis.

Zone 2 Adjoining Lot (No.92 Babbage Road)

Zone 2 has been mapped as bushfire prone category 1 vegetation, including the roadshoulder area leading to the foreshore vegetation north of the open park area oppositeto No.90 Babbage Road.

A detailed site inspection reveals the adjoining lot be mostly exotic vegetation with amoderate to high potential bushfire threat to all properties that are in proximity to thisallotment.

The connection between this lot and its bushfire hazards and the foreshore area is

discontinuous, therefore the overall bushfire threat not considered to be an extremeriskto any future development of No. 90 Babbage Road.

Notwithstanding this, No. 92 Babbage Road, in its current unmanaged condition, has thepotential to exert a high bushfire threat upon any future development of No. 90 BabbageRoad.

Zone 3 Bushland to the north up to and parallel to Warringah Road.

Zone 3 is a substantial area of bushfire prone vegetation and has the highest capacity toaffect the general area of Babbage Road and surrounding environs.

Zone 2

No.92

No.90


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A bushfire event originating from this aspect would have sufficient critical mass togenerate embers and fire spread along the foreshore area towards the south east to the

managed land area of the park opposite No. 90 Babbage Road.

The along the foreshore area the vegetation has a northerly aspect and would be subjectto fire weather winds that would move the fire front along the water front and generallyaffect all properties on the Babbage Road interface.

This aspect is considered to be a high bushfire threat zone to residents along BabbageRoad irrespective of any future development upon the subject lot.

Zone 3 Bushfire Threat & Fire Weather Wind Direction & Potential Fire Pathway

A bushfire event from the northern aspect also has the potential to start spot fires alongthe foreshore area, increasing the local bushfire threat to all properties within the generalvicinity including a spot fire potential within No.92 Babbage Road (if left unmanaged).

The northern aspect along Warringah Road therefore presents the highest bushfire

threat potential to any future development of No. 90 Babbage Road and is thereforesubject to a design bushfire model for potential bushfire impacts upon any futuredevelopment upon the subject lot

Design Bushfire Model

The design bushfire model examines a potentially rapidly moving bushfire event that hasits origins to the north of the subject allotment.

Zone 3

No.90

Up Slope = 120 Up Slope = 12

0


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A fire originating from this aspect and location under severe bushfire weather conditionshas the potential to create a fire front of 100m based on the available open space and

general land slope within the immediate vicinity of the bushfire origin.

The likely pathway the bushfire would travel is to the east, south east splitting at thenorthern most property (Lot B) and traveling along Babbage Road adjacent to WarringahRoad and along the foreshore of Middle Harbour down to the open managed park areaopposite No.90 Babbage Road.

The land slope is parallel to Warringah Road and is generally 120along a transect of186m running south west to north east.

A design bushfire model for a bushfire along this transect would produce a local radiantheat flux rating of 76.03 (BAL FZ) for properties on the northern Babbage Road area as

the bushfire would burn upslope from the shore line to an exit point along the northernportion of Babbage Road.

However this design bushfire though would only exert a RHF emission rate upon No.90Babbage Road of approximately 6.97kW/m2(BAL 12.5) due to a 100m separation to theinterface of the mapped bushfire prone vegetation on the north western aspect from therear lot boundary line as shown below.

Design Fire 1 Transect 1 Parallel to Warringah Road

Design bushfire 1 as it approaches along the north eastern foreshore line wouldgenerate approximately 24.13kW/m2of RHF upon any development on No.90 BabbageRoad as shown above. This design model assumes the bushfire does not progressfurther than northern end of Babbage Road and does not impact upon No.92 BabbageRoad (the lot adjoining the study property)

Up Slope ~120

Zone 3

No.90

~100m

Up Slope ~120

~49m

~BAL 12.5

~BAL 29

~BAL FZ


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It is noted that this design bushfire does not account for the adjoining lot remainingunmanaged based on its current level of bushfire hazards.

The final design fire model has therefore been formulated on the basis that No 92Babbage Road is a bushfire origin point and exerts a direct bushfire impact upon a futuredwelling constructed at No. 90 Babbage Road.

Design Fire 1 Northern No. 92 Babbage Road (DF1) is premised on the followingparameters:

Adjoining Lot (No. 92 Babbage Road) remains unmanaged for bushfire hazards;

A fuel loading adjustment is added to the design bushfire model to account for

the variable fuel loading within the adjoining property;

The adjustment to fuel loading is a reduction of 5t/ha for SFL and a reduction of5t/ha for OFL;

Vegetation Slope = approximately 120down slope to the subject lot;

Land Slope = ~120up slope off the road;

Land slope is variable as the area has rock shelves that terrace the effectiveslope over selected transects. The slope has been averaged along each transectgiven the topography changes and the interrupted slope lines where the land

steps down along various rock ledges to the shoreline.

Vegetation is deemed to be forest and mix understorey of ferns, grasses andshrubs and exotic weeds (predominantly within privately own land);

An adjustment to the surface fuel levels (SFL) and hence the overall fuel levelOFL) has been made to account for the current bushfire threat within No. 92Babbage Road. A 5t/ha reduction has been applied to the model in this instance.

Hypothetical separation distance to the adjoining lot is approximately 10m from aproposed future building footprint;

The preliminary design bushfire model presented in this report is reliant on afuture dwelling footprint zone location at the front of the lot towards the BabbageStreet frontage. Having noted the site constraints, the front portion of the subjectlot is favoured.

It should be noted that any adjustments made to the standard bushfire vegetationclassification fuel accumulations are subject to Rural Fire Service concurrenceand as such, the adjustments made in this design bushfire model may not beagreed to by the RFS upon submission of a Development Application.


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Design Fire 1 Northern Run No. 92 Babbage Road (DF 1)

With an overall separation distance of 10m from any future dwelling within No.90Babbage Road to an unmanaged bushfire prone vegetation interface within No. 92Babbage Road (i.e. the adjoining lot) would create a BAL FZ bushfire threat environmentwith a hypothetical RHF of 50.48kW/m2.

Note: the preliminary BAL FZ rating is strictly based on separation distance and anychange will have a direct effect upon the overall radiant heat flux emission rate from abushfire event within No. 92 Babbage Road. The BAL modeling for the site is sensitive


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to any adjustment and this will result in a greater BAL rating, likely to be in the higherrange of BAL FZ.

It should also be noted that a dwelling situated upon No. 90 Babbage Road towards thelower portion of the lot would have a minimal exposure to this design bushfire event asthe bulk of the bushfire impact would move up slope and away from the subject dwellinglocation towards the upper levels and affect dwellings that have a street frontage alongthe southern Babbage Road area.

Design Bushfire 92 Babbage Road Potential Bushfire Spread Directions

As discussed, the management of vegetation within No. 92 Babbage Road will eliminatethis BAL rating and the maximum bushfire threat level would revert to a BAL 29 basedon the design bushfire model of the northern approaching bushfire along Middle Harbourshoreline.

Riparian Corridor Bushfire Consequences

An examination of Council DLEP indicates that the subject lot is not within a ripariancorridor zone.

A riparian corridor is noted along the Middle Harbour shoreline as highlighted in theRiparian Corridor Map shown over.

The location of the corridor has no direct consequence upon bushfire protectionmeasures relating to No. 90 Babbage Road.

DF 1 Northern Run 92 Babbage Road

No.92

No.90


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Current Riparian Corridor Land Map Babbage Road

Potential Building Footprint Zones

The potential building footprint zone within No. 90 Babbage Road is toward the lowerend of the lot and, if possible and subject to final site survey, is approximately 10m fromthe northern adjoining lot interface so as to limit the BAL rating to a lower scale BAL FZin terms of radiant heat flux emission rate (as per the design bushfire model).

Whilst not to scale, the site diagram over highlights the general vicinity of a

recommended building footprint zone within the lot.

The closer to the south eastern side boundary for the building footprint will limit anybushfire impingement should a bushfire originate within No. 92 Babbage Roadpotentially reduce the time of exposure as a bushfire travels upslope off Babbage Roadto the higher portions of the surrounding lots.

No.90


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Potential Building Footprint Zone

BAL FZ Construction Materials

Construction in a BAL FZ location is able to be achieved using certified buildingmaterials that have been tested in accordance with AS1530.2.8 and installed inaccordance with manufacturers technical installation requirements.

Protection of openings for BAL FZ rated buildings requires compliance with AS3959 2009 clause 9.5 (in general). The New South Wales Rural Fire Service do not generallyapprove of alternate bushfire protection measures that require an activation, preferring torequire that all buildings be protected with passive protection measures.

The installation of bushfire shutters is a notable exception to the RFS policy andtherefore, the use of bushfire shutters is often mandated for window and door openingsin a BAL FZ rated location.

External protection of window and door openings are able to protected by other meansincluding high volume drenchers and alternate opening protection measures that havebeen developed in Victoria and made available in NSW.

An indication of the currently approved building materials for a BAL FZ rated building ishighlighted in the following table.

Potential Building Footprint Site Diagram

No.92

No.90

Potential Building Footprint


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Recommendations for Building Materials Table 1 BAL FZ Locations

ProposedBuildingMaterial

BuildingElement

Certified toComply withAS1530.8.2

Complies/Suitable

External Cladding James HardieScyon Stria

External Walls Manufacturer does notstate compliance withAS1530.8.2.AS3959 2009Section 9 9.4 1 (a)requires a system withan FRL of 30/30/30 or-/30/30 when testedfrom the outside.

Compliance Certificate to be provided, material on its owndoes not comply. Will require a FRL 30/30/30 or FRL -/30/30.FRL means at least 30 minutes of (i) Structural Adequacy; (ii)Integrity; (iii) Insulation.External wall cladding will require FRL -/30/30 only.Will require compliance with James Hardie specification asdepicted below:

Fibre CementSheeting withRender Finish

External Walls As above As above for installation.

RenderedBrickwork

External Walls Single leaf masonry tocomply with AS 3700for fire resistance

Complies and capable of achieving an FRL of 60/60/60.

Corrugated SteelCladding

External Walls Colourbond SteelClad certified tocomply with BAL FZ

Recommend Colourbond Steel Clad Roofing System applicable also for external walls

Glazed Windows all elevations

Windows and GlazedSliding Doors

Most manufacturersglazing elementsrated to BAL 40 notBAL FZ.

Recommend a composite system as windows for BAL FZrequire compliance with AS3959 2009 Section 9.5.2. BAL FZwindows can be protected with a non combustible shutter orhave an FRL of -/30/-.Current glazed elements do not comply with AS3959 2009.

External doors External doors allelevations.

To comply withAS3959 Section9.5.3.

Doors to have an FRL of -/30/- and be tight fitting and besealed to prevent ember and smoke entry.Shutters also recommended by AS3959 2009.

Other Elements ofConstruction

Other elements ofconstructioninclude:

Eaves;

Fascias;Roof Penetrations;Gutters andDownpipes;Garage Entry Door;Decks.

These buildingelements will needto be constructed fromnon combustiblematerials as per the

Standard.

Eaves and fascias to be constructed in accordance withmanufacture recommendations. If similar materials to externalwall cladding use specifications for wall cladding fixing. Allunderside portions of eave intersections and roof frameabutments to be made fire proof.

Garage entry door to be non combustible and if provided witha glazed element, the glazing is to be fire rated to FRL of -/30/-

Garage door frame to be fully sealed with non combustiblemastic at wall fixing points and smoke and ember seals to beprovided around the head of the garage door and the f loorintersection point.


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Summary

The proposed development is located within an area that is designated as being bushfireprone. Any proposed future dwelling is capable of being protected against local bushfireimpacts in accordance with the requirements of Chapter 4, Clause 4.3 as outlined inPlanning for Bushfire Protection 2006.

Conclusion

In accordance with the requirements of the deem to satisfyconstruction requirements ofAS3959 2009, and Planning for Bushfire Protection 2006, in my professional opinion,any proposed future dwelling can, if constructed in accordance with the BAL rating forthis lot, will generally comply with the BAL FZ risk assessment maximum level of

50.48kW/m2

based on an APZ of 10m to the north of any future building footprint.

The preliminary BAL FZ rating is strictly based on an APZ to the north of the dwellingbeing a minimum of 10m. The BAL modeling for the site is distance sensitive to anyadjustment and this will result in a greater BAL rating, likely to be in the higher range ofBAL FZ.

Final approval of any future development upon the subject site is also dependent on theNew South Wales Rural Fire Service agreeing to a fuel level adjustment to compensatefor the variable vegetation compositions to the south and south east of the subject site.

Signed: Dated: 17 February 2013Steve Parrott FPA Accredited Practitioner ANo. 16761

Bushfire Safety Solutions


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Conditions of Use

This BAL assessment is copyright protected and can only be utilised by the Client for thepurposes of this development proposal and is not available for use or to be copied in any form byothers not authorised by Bushfire Safety Solutions.

This BAL assessment has been prepared in accordance with the Deemed to Satisfy (DTS)compliance provisions of each relevant NSW regulatory requirement.

It is a condition that the use of this Report is only vested in the Client upon final paymentof the Certificate fee.

The recommendations provided in the assessment respond to the requirements of Planning forBushfire Protection 2006. The recommendations provide a guideline to both the relevant consentauthority and the New South Wales Rural Fire Service as to how the proposed development can

comply with the provisions of AS 3959 2009 and Planning for Bushfire Protection 2006.

Disclaimer

This BAL assessment is provided in good faith and is based on information supplied for thedevelopment by the Client.

It should be noted that the NSW Rural Fire Service may accept, modify or reject theserecommendations and, as a consequence of the RFS actions, we accept no liabilityfor the final

determination made by the RFS.

The design bushfire modeling and estimated BAL ratings are based on the best available bushfire

design assessment techniques and bushfire assessment science however, the New South WalesRural Fire Service may choose otherwise to independently assess this proposal and thenceprovide a determination of their own BAL modeling contrary to that undertaken in this report.

The actions of the New South Wales Rural Fire Service therefore are neither endorsed noragreed to as being the final BAL rating and hence bushfire threat for this assessment.

Bushfire behaviour is an unpredictable phenomenon and is often erratic under extreme weatherconditions.

All care has been taken in the preparation of this BAL assessment and recommendationsprovided therein. Site conditions, vegetation regrowth and maintenance of asset protection zonesare not regulated and therefore may not be maintained in perpetuity to ensure adequateseparation between the assets and the bushfire prone vegetation.

Bushfire Safety Solutions accepts noliability for any ongoing bushfire threat to the property ormaintenance of the bushfire protection measures provided to the development.

It is the responsibility of the owner of the property to maintain bushfire protection of the propertyat all times.

Active and passive bushfire protection measures require ongoing maintenance and diligence toensure adequate bushfire protection.