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Road Traffic Noise Intrusion Assessment

Seniors Living Development 2 Jarvisfield Road, Picton

REPORT No 6446-1.1R

DATE ISSUED 17 April 2018

Prepared For: Michael Brown Michael Brown Planning Strategies Pty Ltd PO Box 295 Camden NSW 2570 Attention: Mr Michael Brown

Michael Brown Planning Strategies Pty Ltd

Road Traffic Noise Intrusion Assessment Page 2 of 20

Ref: 6446-1.1R 17-Apr-18

Revision History

Report Date Prepared Checked Comment

Draft 13/03/2018 Matthew Bruck Stephen Gauld By email, for client review

Final 17/04/2018 Matthew Bruck Stephen Gauld

Document R\6446-1.1r, 20 pages plus attachments

Disclaimer

The work presented in this document was carried out in accordance with the Day Design Pty Ltd Quality Management System. Day Design is certified to ISO9001. Day Design Pty Ltd reserves all copyright of intellectual property in any or all of Day Design’s documents. No permission, license or authority is granted by Day Design to any person or organisation to use any of Day Design’s documents for any purpose without written consent of Day Design. This report has been prepared for the client identified and cannot be relied or used by any third party. Any representation, statement, opinion or advice, expressed or implied in this report is made in good faith but on the basis that Day Design is not liable (whether by reason of negligence, lack of care or otherwise) to any person for any damage or loss whatsoever which has occurred or may occur in relation to that person taking or not taking (as the case may be) action in any respect of any representation, statement, or advice referred to above. Recommendations made in this report are intended to resolve acoustical problems only. No claims of expertise in other areas are made and no liability is accepted in respect of design or construction for issues falling outside the specialist field of acoustical engineering including but not limited to structural, fire, thermal, architectural buildability, fit for purpose, waterproofing or other aspects of building construction. Supplementary professional advice should be sought in respect of these issues. The information in this document should not be reproduced, presented or reviewed except in full. Prior to passing onto a third party, the Client is to fully inform the third party of the specific brief and limitations associated with the commission. The only exception to this is for the Regulatory Authority in its use of this report to make a Determination.



Ref: 6446-1.1R 17-Apr-18

CONTENTS

1.0 CONSULTINGBRIEF.................................................................................................................................................5

2.0 PROJECTDESCRIPTION..........................................................................................................................................6

3.0 NOISESURVEYINSTRUMENTATION...............................................................................................................8

4.0 ACCEPTABLENOISEINTRUSIONLEVELS....................................................................................................9

4.1 NSWDepartmentofPlanning................................................................................................................................9

4.2 NSWStateEnvironmentalPlanningPolicy(Infrastructure)2007.........................................................9

4.3 ProjectSpecificInternalNoiseCriteria............................................................................................................10

5.0 ROADTRAFFICNOISELEVELS........................................................................................................................11

5.1 MeasuredRoadTrafficNoiseLevels.................................................................................................................11

5.2 RequiredRoadTrafficNoiseReduction..........................................................................................................13

5.3 MechanicalVentilationRequirements.............................................................................................................14

6.0 RECOMMENDEDACOUSTICALTREATMENT.............................................................................................15

6.1 ExternalWalls.............................................................................................................................................................15

6.2 CeilingandRoofSystem.........................................................................................................................................16

6.3 GlazingandGlazedDoors......................................................................................................................................17

6.4 EligibleSuppliersofWindowsandGlassDoors...........................................................................................18

6.5 EntryDoors..................................................................................................................................................................18

6.6 ConstructionDisclaimer.........................................................................................................................................19

7.0 NOISEINTRUSIONSTATEMENT......................................................................................................................20



Ref: 6446-1.1R 17-Apr-18

TABLES

Table1 NoiseInstrumentation........................................................................................................................................8

Table2 RequiredIndoorNoiseLevels–ResidentialBuildings..........................................................................9

Table3 LongTermRoadTrafficSoundPressureLevels(Fastresponse)...................................................11

Table4 MeasuredRoadTrafficSoundPressureLevels.......................................................................................12

Table5 CalculatedLongTermRoadTrafficSoundPressureLevels(Fastresponse).............................12

Table6 RequiredRoadTrafficNoiseReduction(TNR).......................................................................................13

Table7 ScheduleofGlazedWindowsandDoorConstructions........................................................................17



Ref: 6446-1.1R 17-Apr-18

1.0 CONSULTINGBRIEF

DayDesignPtyLtdhasbeenengagedbyMichaelBrownPlanningStrategiesPtyLtdonbehalfofMrWilliamMallamandMrTimMallamtocarryoutaroadtrafficnoiseintrusionstudyforaseniorslivingdevelopmentcomprisingof62residentialLotstobesubdividedat2JarvisfieldRoad,Picton,NSWasrequiredbyWollondillyShireCouncil.

Thiscommissioninvolvesthefollowing:

MeasurethenoiselevelfromtrafficonRemembranceDriveway.

Determinetheacceptablenoiselevelinsidefutureresidentialdwellings.

Carryoutnoiseintrusionanalysisassumingtypicalbuildingconstruction.

Design sound insulation of the residences to meet the requirements of StateEnvironmentalPlanningPolicy (Infrastructure)2007andDepartmentofPlanning’sDevelopmentnearRailCorridorsandBusyRoads.

PrepareaRoadTrafficNoiseIntrusionReport.



Ref: 6446-1.1R 17-Apr-18

2.0 PROJECTDESCRIPTION

A new seniors living development comprising of 62residential Lots is proposed to beconstructedat2JarvisfieldRoad,Picton,NSW,Lot4/‐/DP873571.

The development site and surrounds are currently zoned RU2 – Rural Landscape inaccordancewithWollondillyLocalEnvironmentalPlan2011.ThesiteadjoinsRemembranceDriveway.

LongandshorttermroadtrafficnoiselevelshavebeenmeasuredonsiteasshowninFigure1.RoadtrafficnoiselevelsarepresentedinSection5.0ofthisReport.

AcceptableintrusivenoiselevelsfromroadtrafficnoisearebasedontherequirementsoftheNSWDepartmentofPlanningdocument“DevelopmentNearRailCorridorsandBusyRoads–Interim Guidelines” (2008) as well as the State Environmental Planning Policy 2007(Infrastructure).

It is likely that noise controls will be required to reduce the noise intrusion to withinacceptableinternalnoiselevelsandaredetailedinSection6.0ofthisreport.

Once the land is subdivided and dwellings proposed, a further reviewwill be required toconfirmwhethertheproposedconstructionwillachievetheinternalnoiselevelsrequiredbytheNSWDepartmentofPlanningandSEPP(Infrastructure)2007.



Ref: 6446-1.1R 17-Apr-18

Figure1–LocationPlan,2JarvisfieldRoad,Picton

DevelopmentSite

MeasurementLocation– ‘A’

MeasurementLocation– ‘B’



Ref: 6446-1.1R 17-Apr-18

3.0 NOISESURVEYINSTRUMENTATION

NoiselevelmeasurementsandanalysisweremadewithinstrumentationasfollowsinTable1:

Table1 NoiseInstrumentation

Description ModelNo SerialNo

InfobyteNoiseLogger(Type2)CondenserMicrophone0.5”diameter

iM4MK250

118118

InfobyteNoiseLogger(Type2)CondenserMicrophone0.5”diameter

iM4MK250

116116

ModularPrecisionSoundAnalyserCondenserMicrophone0.5”diameterAcousticalCalibrator

B&K2270G4B&K4189B&K4231

301078127548842721949

An environmental noise logger is used to continuouslymonitor ambient noise levels andprovideinformationonthestatisticaldistributionofnoiseduringanextendedperiodoftime.TheInfobyteNoiseMonitoriM4isaType2precisionenvironmentalnoisemonitormeetingalltheapplicablerequirementsofAS1259foranintegrating‐averagingsoundlevelmeter.

TheB&K2270G4SoundAnalyserisareal‐timeprecisionintegratingsoundlevelmeterwithoctave and third octave filters, that sample noise at a rate of 10 samples per second andprovidesLeq,L10andL90noiselevelsusingbothFastandSlowresponseandLpeaknoiselevelsonImpulseresponsetimesettings.ThemeterisfrequencyweightedtoprovidedBA,dBCorLinearsoundpressurelevelreadingsasrequired.

All instrument systemshadbeen laboratory calibratedusing instrumentation traceable toAustralian National Standards and certifiedwithin the last two years thus conforming toAustralianStandards.Themeasurementsystemwasalsofieldcalibratedpriortoandafternoisesurveys.Calibrationdriftwasfoundtobelessthan0.5dBduringattendedandlessthan1dB for unattended measurements. No adjustments for instrument drift during themeasurementperiodwerewarranted.



Ref: 6446-1.1R 17-Apr-18

4.0 ACCEPTABLENOISEINTRUSIONLEVELS

4.1 NSWDepartmentofPlanning

TheNSWDepartmentofPlanningdocument“DevelopmentNearRailCorridorsandBusyRoads–InterimGuidelines”(2008)recommendsnoisecriteriaasshowninTable2below.

Table2 RequiredIndoorNoiseLevels–ResidentialBuildings

TypeofOccupancy NoiseLevel,dBA ApplicableTimePeriod

Sleepingareas(bedrooms) 35 Night10pmto7am

Otherhabitablerooms(excl.garages,

kitchens,bathrooms&hallways)40 Atanytime

Note:airbornenoiseiscalculatedasLeq(9h)(night)andLeq(15hr)(day).

Inaddition,italsostatesthat:

“ifinternalnoiselevelswithwindowsordoorsopenexceedthecriteriabymorethan10dBA,thedesignoftheventilationfortheseroomsshouldbesuchthatoccupantscanleavewindowsclosed,iftheysodesire,andalsotomeettheventilationrequirementsoftheBuildingCodeofAustralia”.

4.2 NSWStateEnvironmentalPlanningPolicy(Infrastructure)2007

TheNSWStateEnvironmentalPlanningPolicy(Infrastructure)2007detailsthefollowinginClause102withregardstoroadnoiseandvibration:

102Impactofroadnoiseorvibrationonnon‐roaddevelopment

(3) If the development is for the purposes of a building for residential use, the consentauthority must not grant consent to the development unless it is satisfied thatappropriatemeasureswill be taken to ensure that the following LAeq levels arenotexceeded:

(a)inanybedroominthebuilding—35dB(A)atanytimebetween10.00pmand7.00 am,

(b)anywhereelseinthebuilding(otherthanagarage,kitchen,bathroomorhallway)—40dB(A)atanytime.

(4) Inthisclause,freeway,tollwayandtransitwayhavethesamemeaningsastheyhaveintheRoadsAct1993.



Ref: 6446-1.1R 17-Apr-18

4.3 ProjectSpecificInternalNoiseCriteria

Taking into consideration the above documents and policies, we recommend that theacceptablenoisecriteriaforthisdevelopmentbeasfollows:

WithWindowsClosed:

Leq,9hr35dBAinsidebedroomsatnight(10pmto7am);and

Leq,15hr40dBAinsideotherhabitableroomsduringtheday(7amto10pm).

WithWindowsOpen:

Leq,9hr45dBAinsidebedroomsatnight(10pmto7am);and

Leq,15hr50dBAinsideotherhabitableroomsduringtheday(7amto10pm).



Ref: 6446-1.1R 17-Apr-18

5.0 ROADTRAFFICNOISELEVELS

5.1 MeasuredRoadTrafficNoiseLevels

The proposed subdivision is affected by road traffic noise from Remembrance Driveway,whichcarriesmoderatetrafficvolumes.

A long term noise monitor was placed at 2 Jarvisfield Road, Picton 24 metres fromRemembranceDrivewayatanapproximatelocationoftheproposedrearfaçadeofLot12.ThelocationofthisnoisemonitorisdesignatedLocation‘A’,asshowninFigure1.

Another long termnoisemonitorwasplaced at 2 JarvisfieldRoad, Picton56metres fromRemembranceDrivewayatanapproximatelocationoftheproposedfrontfaçadeofLot22.ThelocationofthisnoisemonitorisdesignatedLocation‘B’,asshowninFigure1.

Thenoisemonitorsmeasuredtrafficnoise levelsoveraperiodofsevendays, fromFriday23FebruarytoFriday2March2018.

ThefollowingnoiselevelsweremeasuredduringthedaytimeandnighttimeperiodsshowninTable3andattachedasAppendixA:

Table3 LongTermRoadTrafficSoundPressureLevels(Fastresponse)

LocationDaytimeLAeq,15hourNoiseLevel(dBA)

NightTimeLAeq,9hourNoiseLevel(dBA)

Location‘A’–2JarvisfieldRoad,Picton

60dBA 55dBA

Location‘B’–2JarvisfieldRoad,Picton

56dBA 52dBA

Meteorologicalconditionsduringthelongtermmonitoringtypicallyconsistedofclearskieswith temperatures ranging between 12°C to 31°C. Noise measurements were thereforeconsideredreliableandtypicalforthereceptorarea.

Shorttermattendednoisemeasurementswerealsocarriedouttoascertainarepresentativetrafficnoisespectrumbetween5.15pmand7.30pmonFriday23February.TrafficnoisemeasurementsweretakenatthesamelocationasthelongtermnoisemonitorLocation‘A’andLocation‘B’,asshowninFigure1.



Ref: 6446-1.1R 17-Apr-18

TheattendedshorttermmeasurednoiselevelisshowninTable4.

Table4 MeasuredRoadTrafficSoundPressureLevels

Location dBAMeasuredSoundPressureLevels(dB)atOctaveBandCentreFrequencies(Hz)

63 125 250 500 1k 2k 4k 8k

TrafficNoiseLevelLocation‘A’–2JarvisfieldRoad,Picton

58 63 61 55 51 54 52 46 39

TrafficNoiseLevelLocation‘B’–2JarvisfieldRoad,Picton

56 63 56 44 48 54 49 40 30

Usingthelongtermandshorttermnoisemeasurements,wewereabletodeterminethelevelof noise at the façades facing Remembrance Driveway of the proposed dwellings. ThesecalculatednoiselevelsareshowninTable5.

Table5 CalculatedLongTermRoadTrafficSoundPressureLevels(Fastresponse)

Location‐2JarvisfieldRoad,PictonDaytimeLAeq,15hourNoiseLevel(dBA)

NightTimeLAeq,9hourNoiseLevel(dBA)

Lots19‐27 56 52

Lots1‐18,Lots28‐31&Lots57‐62 60 55

Lots32‐56 <55 <50

WeareoftheopinionthatthenoiselevelsinTable3to5abovewillbetypicalforthisarea,andhaveadoptedthesevaluesinthedesignofnoiseinsulationfortheproposedresidentialdwelling.



Ref: 6446-1.1R 17-Apr-18

5.2 RequiredRoadTrafficNoiseReduction

BasedontheacceptablenoiselevelsestablishedinSection4ofthisreport,therequirednoisereductionfromroadtrafficisshownbelowinTable6:

Table6 RequiredRoadTrafficNoiseReduction(TNR)

Location‐2JarvisfieldRoad RoomDescriptionRequiredTNR

(dBA)

Lots19‐27

(WindowsClosed)

LivingAreas Upto16

SleepingAreas Upto17

Lots19‐27

(WindowsOpen)

LivingAreas Upto6

SleepingAreas Upto7

Lots1‐18,Lots28‐31&Lots57‐62

(WindowsClosed)

LivingAreas Upto20


Lots3‐18,Lots28‐31&Lots57‐62

(WindowsOpen)

LivingAreas Upto10


Lots32‐56

(WindowsClosed)

LivingAreas Upto15


Lots32‐56

(WindowsOpen)

LivingAreas Upto5

SleepingAreas Upto5



Ref: 6446-1.1R 17-Apr-18

5.3 MechanicalVentilationRequirements

Fornaturalventilationofdwellings,with20%ofthewindowsandexternaldoorsopen,thelevelofnoiseinsidetheroomsfromroadtrafficshouldnotexceed10dBabovetheinternalnoisecriteria.

Upto10dBnoisereductioncanbeachievedwiththewindows/doorsopen.Anoisereductionofupto10dB ishoweverrequired fortheBedroomsand10dBinLivingRoomswiththewindows/doorsopenfacingRemembranceDriveway.Therefore,nomechanicalventilationwillrequiredforanydwelling.



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6.0 RECOMMENDEDACOUSTICALTREATMENT

WehavemodelledtheproposedresidentialLots(AppendixB)withstandardconstructionsincearchitecturalplanshavebeennotbeenapproved.Wecalculatedthelevelofroadtrafficnoiseintrusionthroughatypicalsizedroof,walls,glazeddoorsandwindowsusingthenoiselevelsestablishedinSection5.0.

Allbedroomsareassumedtobecarpeted.Allotherrooms,suchasthefamily/kitchenroomandbathroomareassumedtohavehard,reflectivefloorssuchastimberortiles.

Thenecessarynoisereductionfortheroomscanbeachievedifthefollowingnoisecontrolrecommendationsarecompliedwith,and therearenogapsat construction joints, aroundplumbingpenetrations inexternalwalls, atwindowsills, door frames, etc., throughwhichsoundmaypenetrate.

6.1 ExternalWalls

Lots1‐18,Lots28‐31,Lots57‐62

Option1–MasonryConstruction:

Externalwallsmaybeofstandardbrickveneer,singlebrickandstudplasterboardorcavitybrickconstruction.

Normalcavity‐brickwallsmakeanexcellentsoundbarrier,reducingoutsidenoiseintrusionbyasmuchas50dBA.Brickveneerwallsalsomakegoodsoundbarriers.However,caremustbeexercisedwithbrick‐veneerwallstominimisesoundpenetrationneartheeavesasshownintheattachedFigureAC806‐MH.Bricklayersshouldbeinstructedtoensuretheperp‐endsarefilledandsuitablecement‐mortarusedtoeliminateshrinkagegapsduringcuring.

Option2–LightweightConstruction

Lightweightstudwallsshallcompriseofthefollowingconstruction:

Oneexternallayerofselectedcladdingwithaminimumsurfacedensityof12kg/m2,suchasHardies‘Axon’or‘Easylap’,fixedto;

90mmtimberstuds,with;

Insulation batts between the studs. The recommended insulation specifications are90mmthickglasswool(min11kg/m3density);

Oneinternallayerof13mmfireratedplasterboardfixedtothestuds.



Ref: 6446-1.1R 17-Apr-18

Lots19‐27

Option1–MasonryConstruction:

Externalwallsmaybeofstandardbrickveneer,singlebrickandstudplasterboardorcavitybrickconstruction.

Option2–LightweightConstruction

Lightweightstudwallsshallcompriseofthefollowingconstruction:

Oneexternal layerofselectedcladdingwithaminimumsurfacedensityof9kg/m2,suchasHardies‘Blueboard’,fixedto;

90mmtimberstuds,with;

Oneinternallayerof10mmplasterboardfixedtothestuds.

Lots32‐56

Externalwallsmaybeofstandardconstruction.

6.2 CeilingandRoofSystem

Allroofsmaybeofmetaldeckconstructionwiththermalinsulationblanketslaidbelowtheroof.

Ceilingsundertheroofshouldcompriseonelayerof10mmplasterboard,and

Insulation batts are to be placed between the ceiling joists. The recommendedinsulation specifications are a minimum 160mm thick glasswool (min 10kg/m3density).



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6.3 GlazingandGlazedDoors

Unless otherwise specified, window frames may be either sliding / awning, or hingedcasement style andbe of robust sound‐barrier constructionhaving interlocking stiles andneoprene(Q‐lonorsimilar)orvinylfinnedsealstominimisesoundleakage.

Table7specifiesminimumweightedsoundreductionindex(Rw)ratingsrequiredforvariouswindowsandglazeddoors.GlazinginallroomsotherthanthosespecifiedinTable7maybeofstandardthicknesswithaminimumRw24.

AtypicalglazingspecificationisgiveninTable7,howeveranalternativeglazingspecificationmaybeusediftheRwisachievedorexceeded.

Table7 ScheduleofGlazedWindowsandDoorConstructions

RoomDescription MinRW TypicalGlazingSpecification

Lots1‐18,Lots28‐31,Lots57‐62

FaçadesfacingRemembranceDriveway

Bedrooms 306.38mmlaminatedglassinasliding/awningframe

withacousticseals

Living/Kitchen/DiningRooms

306.38mmlaminatedglassinaslidingframewith

acousticseals

FaçadesperpendiculartoRemembranceDriveway

Bedrooms 265mmglassinasliding/awningframewithacoustic

seals


26 5mmglassinaslidingframewithacousticseals

Lots1‐2,Lots19‐27

FaçadesfacingRemembranceDriveway

Bedrooms 265mmglassinasliding/awningframewithacoustic

seals


26 5mmglassinaslidingframewithacousticseals

Lots32‐56

Allrooms 24 Standardconstruction



Ref: 6446-1.1R 17-Apr-18

Thisscheduleofconstructionistypicalandforgeneralguidancetothearchitectinpreparingfinalconstructiondrawingsandspecifications.OtherconstructionsthatprovidethesameorbetterSoundTransmissionLossperformancemayalsobeacceptable.

It ismost important that any sound leakagepaths around thewindowsbe sealed off.Werecommendthatpriortothefittingofthearchitravesaroundthewindows,thespacebetweenthe frames and thewall structure be sealed offwith silicone or polyurethanemastic andbackingrodsinstalledbehind.Thewindowarchitravescanthenbefitted.

6.4 EligibleSuppliersofWindowsandGlassDoors

Thewindowsanddoorsarethemostcriticalsoundpathsinabuilding.Onlythosecompanieswhohave conducted laboratory testing of theirwindows should be considered as eligiblesuppliers.Companiesthatweareawareofhavingconductedsatisfactorytestinginclude:

ArchitecturalWindowSystems,WetherillPark,NSW Phone:87837611

MicosAluminiumPtyLtd,Hillsdale,NSW Phone:96615233

ChristoffelPtyLtd,Riverstone,NSW Phone:96274811

AskaWindows,Greenacre,NSW Phone.96428588

JamesHardie(Trend)Windows,Girraween,NSW Phone:98402000

BoralWindowSystems,Smithfield,NSW Phone:97570555

Stegbar(Windows)PtyLtd,Lansvale,NSW Phone:97945200

Approvalshouldbesought fromDayDesignbeforeanyothermanufacturers’productsareconsidered.Rwratingsclaimedshouldbesupportedbyacousticallaboratorytestreports.WesuggestthatyouobtainconfirmationfromtheglazierthattheglazingsuppliedwillmeettherequiredRwratingabove.

6.5 EntryDoors

The entry doors should be of solid core timber constructionwith a nominal thickness of35mm.



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6.6 ConstructionDisclaimer

Recommendationsmadeinthisreportareintendedtoresolveacousticalproblemsonly.Wemakenoclaimofexpertiseinotherareasanddrawyourattentiontothepossibilitythatourrecommendationsmay notmeet the structural, fire, thermal or other aspects of buildingconstruction.

We encourage clients to check with us before using materials or equipment that arealternativetothosespecifiedinourAcousticalReport.

Theintegrityofacousticstructuresisverydependentoninstallationtechniques.Forexample,a small crack between the top of a wall and a ceiling can reduce the effective soundtransmission lossofawall fromRw50 toRw40.Therefore theuseofcontractors thatareexperienced in acoustic construction is encouraged. Furthermore, two insulationproductsmayhavethesamethermalRratingbutthesoundabsorptionofonemaybeentirelydeficient,thereforetheuseofmaterialsandequipmentthataresupportedbyacousticlaboratorytestdataisencouraged.



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7.0 NOISEINTRUSIONSTATEMENT

Day Design Pty Ltd was engaged by Michael Brown Planning Strategies on behalf ofMrWilliamMallamandMrTimMallamtocarryoutaroadtrafficnoiseintrusionstudyforaproposedsubdivisionofaseniorslivingdevelopmenttobeconstructedat2JarvisfieldRoad,Picton,NSW.

Existing levels of road traffic noise were measured at 2 Jarvisfield Road adjacent toRemembranceDriveway.Weareconfidentthatthenoiselevelsusedinourassessmentaretypicaloftheaveragenoiselevelsinthisarea.

BasedonassumedtypicalbuildingconstructionandprovidedthatalltherecommendationsinSection6.0ofthisreportaresatisfactorilycarriedout,weareconfidentthattheintrusiveroadtrafficnoiselevelswillcomplywiththeacceptableintrusivenoiselevelsrequiredStateEnvironmental Planning Policy (Infrastructure) 2007 and Department of Planning’sDevelopmentnearRailCorridorsandBusyRoadsandthereforeconsideredacceptable.

Afurtherreviewshouldbecarriedoutoncearchitecturaldrawingsareprepared,toconfirmthattheindoornoiselevelswillbemet.

MatthewBruck,BE(Mech)Hons,BS(MatSc)

AcousticEngineer

forandonbehalfofDayDesignPtyLtd

AAACMEMBERSHIPDayDesignPtyLtdisamembercompanyoftheAssociationofAustralasianAcousticalConsultants,andtheworkhereinreportedhasbeenperformedinaccordancewiththetermsofmembership.

Attachments: AppendixA–AmbientNoiseSurveys(RoadTraffic) AppendixB–LotLayout AC108‐1to4–GlossaryofAcousticalTerms

AMBIENT NOISE SURVEY 6446‐1Appendix A1

DAY DESIGN PTY LTD

25

35

45

55

65

75

00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00

Noise Level (d

BA)

Time (hh:mm)

L10 Leq L90

Thursday, 22 February 2018 Friday, 23 February 2018 Saturday, 24 February 2018 Sunday, 25 February 2018 Monday, 26 February 2018 Tuesday, 27 February 2018 Wednesday, 28 February 2018

Located at Location A - 2 Jarvisfield Road, Picton, NSW

Thursday, 1 March 2018

AMBIENT NOISE SURVEY 6446‐1Appendix A2

DAY DESIGN PTY LTD

25

35

45

55

65

75

00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00 06:00 12:00 18:00 00:00

Noise Level (d

BA)

Time (hh:mm)

L10 Leq L90

Thursday, 22 February 2018 Friday, 23 February 2018 Saturday, 24 February 2018 Sunday, 25 February 2018 Monday, 26 February 2018 Tuesday, 27 February 2018 Wednesday, 28 February 2018

Located at Location B - 2 Jarvisfield Road, Picton, NSW

Thursday, 1 March 2018

alexander

Text Box

6446-1 Appendix B

GLOSSARY OF ACOUSTICAL TERMS AC108Sheet 1 of 4

DAY DESIGN PTY LTD

ACOUSTICAL–Pertainingtothescienceofsound,includingthegeneration,propagation,effectsandcontrolofbothnoiseandvibration.

AMBIENTNOISE–Theambientnoiselevelataparticularlocationistheoverallenvironmentalnoise level caused by all noise sources in the area, both near and far, including road traffic,factories,windinthetrees,birds,insects,animals,etc.

AUDIBLE – meansthatasoundcanbeheard. However, thereareawiderangeofaudibilitygrades,varyingfrom“barelyaudible”to“justaudible”,“clearlyaudible”and“prominent”.Chapter83oftheNSWEnvironmentProtectionAuthority–EnvironmentalNoiseControlManual(1985)states:“noisefromaparticularsourcemightbeoffensiveifitisclearlyaudible,distinctfromtheprevailingbackgroundnoiseandofavolumeorcharacterthatareasonablepersonwouldbeconsciousoftheintrusionandfinditannoyingordisruptive”.

Itfollowsthattheword“audible”inanenvironmentalnoisecontextmeans“clearlyaudible”.

BACKGROUNDNOISELEVEL–Silencedoesnotexistinthenaturalorthebuilt‐environment,onlyvaryingdegreesofnoise.TheBackgroundNoiseLevelistheaverageminimumdBAlevelofnoisemeasuredintheabsenceofthenoiseunderinvestigationandanyothershort‐termnoisessuchasthosecausedbycicadas,lawnmowers,etc.ItisquantifiedbytheLA90orthedBAnoiselevelthatisexceededfor90%ofthemeasurementperiod(usually15minutes).

AssessmentBackgroundLevel (ABL) is the single figure background level representingeachassessmentperiod–day,eveningandnight(iethreeassessmentbackgroundlevelsaredeterminedforeach24hrperiodofthemonitoringperiod).Determinationoftheassessmentbackgroundlevelisbycalculatingthetenthpercentile(thelowesttenthpercentvalue)ofthebackgroundlevels(LA90)foreachperiod(refer:NSWIndustrialNoisePolicy,2000).

RatingBackgroundLevel(RBL)asspecifiedbytheEnvironmentProtectionAuthorityistheoverallsinglefigure(LA90)backgroundnoiselevelrepresentinganassessmentperiod(day,eveningornight)overamonitoringperiodof(normally)threetosevendays.

TheRBLforanassessmentperiodisthemedianofthedaily lowesttenthpercentileofL90backgroundnoiselevels.

Ifthemeasuredbackgroundnoiselevelislessthan30dBA,thentheRatingBackgroundLevel(RBL)isconsideredtobe30dBA.

DECIBEL–Thehumanearhasavastsound‐sensitivityrangeofoverathousandbilliontoone.Thedecibelisalogarithmicunitthatallowsthissamerangetobecompressedintoasomewhatmorecomprehensiblerangeof0to120dB.Thedecibelistentimesthelogarithmoftheratioofasoundleveltoareferencesoundlevel.SeealsoSoundPressureLevelandSoundPowerLevel.

Decibelnoiselevelscannotbeaddedarithmeticallysincetheyarelogarithmicnumbers. Ifonemachineisgeneratinganoiselevelof50dBA,andanothersimilarmachineisplacedbesideit,thelevelwillincreaseto53dBA,not100dBA.Tensimilarmachinesplacedsidebysideincreasethesoundlevelby10dBA,andonehundredmachinesincreasethesoundlevelby20dBA.

dBA–Thehumanearislesssensitivetolowfrequencysoundthanhighfrequencysound.Wearemostsensitivetohighfrequencysounds,suchasachild’sscream.Soundlevelmetershaveaninbuiltweightingnetwork,termedthedBAscale,thatapproximatesthehumanloudnessresponseatquietsoundlevels(roughlyapproximatesthe40phonequalloudnesscontour).


DAY DESIGN PTY LTD

However, the dBA sound level provides a poor indication of loudness for sounds that aredominated by low frequency components (below 250 Hz). If the difference between the “C”weightedandthe“A”weightedsoundlevelis15dBormore,thentheNSWIndustrialNoisePolicyrecommendsa5dBApenaltybeappliedtothemeasureddBAlevel.

dBC–ThedBCscaleofasoundlevelmeterissimilartothedBAscaledefinedabove,exceptthatathighsoundintensitylevels,thehumanearfrequencyresponseismorelinear.ThedBCscaleapproximatesthe100phonequalloudnesscontour.

EQUIVALENT CONTINUOUS NOISE LEVEL, LAeq – Many noises, such as road traffic orconstructionnoise,varycontinuallyinleveloveraperiodoftime.Moresophisticatedsoundlevelmetershaveanintegratingelectronicdeviceinbuilt,whichaveragetheAweightedsoundpressurelevelsoveraperiodoftimeandthendisplaytheenergyaverageorLAeqsoundlevel.Becausethedecibel scale is a logarithmic ratio the higher noise levels have far more sound energy, andthereforetheLAeqleveltendstoindicateanaveragewhichisstronglyinfluencedbyshortterm,highlevelnoiseevents.Manystudiesshowthathumanreactiontolevel‐varyingsoundstendstorelatecloselytotheLAeqnoiselevel.

FREEFIELD–Thisisasoundfieldnotsubjecttosignificantreflectionofacousticalenergy.Afree fieldoverareflectingplane isusuallyoutdoorswith thenoisesourcerestingonhard flatground,andnotcloserthan6metrestoanylargeflatobjectsuchasafenceorwall;orinsideananechoicchamber.

FREQUENCY–Thenumberofoscillationsorcyclesofawavemotionperunittime,theSIunitbeingtheHertz,oronecyclepersecond.

IMPACTISOLATIONCLASS(IIC)–TheAmericanSocietyforTestingandMaterials(ASTM)hasspecified that the IIC of a floor/ceiling system shall be determined by operating an ISO 140StandardTappingMachineonthefloorandmeasuringthenoisegeneratedintheroombelow.TheIICisanumberfoundbyfittingareferencecurvetothemeasuredoctavebandlevelsandthendeductingthesoundpressurelevelat500Hzfrom110decibels.ThusthehighertheIIC,thebettertheimpactsoundisolation.

IMPACTSOUNDINSULATION(LnT,w)–AustralianStandardASISO717.2–2004hasspecifiedthattheImpactSoundInsulationofafloor/ceilingsystembequantifiedbyoperatinganISO140StandardTappingMachineonthefloorandmeasuringthenoisegeneratedintheroombelow.TheWeightedStandardisedImpactSoundPressureLevel(LnT,w)isthesoundpressurelevelat500Hzforareferencecurvefittedtothemeasuredoctavebandlevels.ThusthelowerLnT,wthebettertheimpactsoundinsulation.

IMPULSENOISE–Animpulsenoiseistypifiedbyasuddenrisetimeandarapidsounddecay,suchasahammerblow,rifleshotorballoonburst.

INTRUSIVENOISELEVEL,LAeq–Thelevelofnoisefromafactory,placeofentertainment,etc.inNSWisassessedonthebasisoftheaveragemaximumnoiselevel,ortheLAeq(15min).ThisistheenergyaverageAweightednoiselevelmeasuredoverany15minuteperiod.

LOUDNESS–Thedegreetowhichasoundisaudibletoalisteneristermedtheloudness.Thehumanearperceivesa10dBAnoiselevelincreaseasadoublingofloudnessanda20dBAnoiseincreaseasaquadruplingoftheloudness.


DAY DESIGN PTY LTD

MAXIMUMNOISELEVEL,LAmax–Thermsmaximumsoundpressurelevelmeasuredonthe"A"scaleofasoundlevelmeterduringanoisesurveyistheLAmaxnoiselevel. ItmaybemeasuredusingeithertheFastorSlowresponsetimeofthemeter.Thisshouldbestated.

NOISE RATING NUMBERS – Asetofempiricallydevelopedequal loudnesscurveshasbeenadoptedasAustralianStandardAS1469‐1983.ThesecurvesallowtheloudnessofanoisetobedescribedwithasingleNRnumber. TheNoiseRatingnumberisthatcurvewhichtouchesthehighestlevelonthemeasuredspectrumofthesubjectnoise.Forbroadbandnoisesuchasfansandengines,theNRnumberoftenequalsthedBAlevelminusfive.

NOISE–Noiseisunwantedsound.Soundiswavemotionwithinmatter,beitgaseous,liquidorsolid.“Noiseincludessoundandvibration”.

NOISEREDUCTIONCOEFFICIENT–See:"SoundAbsorptionCoefficient".

OFFENSIVE NOISE ‐(Reference:DictionaryoftheProtectionoftheEnvironmentOperationsAct1997)."OffensiveNoisemeansnoise:(a) that,byreasonofitslevel,nature,characterorquality,orthetimeatwhichitismade,orany

othercircumstances:(i) isharmfulto(orlikelytobeharmfulto)apersonwhoisoutsidethepremisefromwhich

itisemitted,or(ii) interferesunreasonablywith(orislikelytointerfereunreasonablywith)thecomfortor

reposeofapersonwhoisoutsidethepremisesfromwhichitisemitted,or(b) thatisofalevel,nature,characterorqualityprescribedbytheregulationsorthatismadeata

time,orinothercircumstancesprescribedbytheregulations."

PINKNOISE–Pinknoiseisabroadbandnoisewithanequalamountofenergyineachoctaveorthirdoctavebandwidth.Becauseofthis,PinkNoisehasmoreenergyatthelowerfrequenciesthanWhiteNoiseandisusedwidelyforSoundTransmissionLosstesting.

REVERBERATION TIME, T60 – Thetimeinseconds,afterasoundsignalhasceased,forthesoundlevelinsidearoomtodecayby60dB. Thefirst5dBdecayisoftenignored,becauseoffluctuationsthatoccurwhilereverberantsoundconditionsarebeingestablishedintheroom.Thedecaytimeforthenext30dBismeasuredandtheresultdoubledtodeterminetheT60.TheEarlyDecayTime(EDT)istheslopeofthedecaycurveinthefirst10dBnormalisedto60dB.

SOUND ABSORPTION COEFFICIENT, – Sound is absorbed inporousmaterialsby theviscousconversionofsoundenergytoheatenergyasthesoundwavespassthroughit.Soundissimilarlyabsorbedbytheflexuralbendingofinternallydampedpanels.ThefractionofincidentenergythatisabsorbedistermedtheSoundAbsorptionCoefficient,.Anabsorptioncoefficientof0.9indicatesthat90%oftheincidentsoundenergyisabsorbed.Theaveragefrom250to2000HzistermedtheNoiseReductionCoefficient(NRC).

SOUNDATTENUATION–Ifanenclosureisplacedaroundamachine,orasilencerisfittedtoaduct,thenoiseemissionisreducedorattenuated.Anenclosurethatattenuatesthenoiselevelby30dBA,reducesthesoundenergybyonethousandtimes.

SOUNDEXPOSURELEVEL(SEL)–ThetotalsoundenergyofasinglenoiseeventcondensedintoaoneseconddurationorinotherwordsitisanLeq(1sec).


DAY DESIGN PTY LTD

SOUND PRESSURE LEVEL, Lp – The level of soundmeasuredon a sound levelmeter andexpressedindecibels,dB,dBA,dBC,etc. Lp=20xlog(P/Po)...dB

wherePisthermssoundpressureinPascalandPoisareferencesoundpressureof20µPa. Lpvarieswithdistancefromanoisesource.

SOUNDPOWERLEVEL,Lw–TheSoundPowerLevelofanoisesourceisanabsolutethatdoesnotvarywithdistanceorwithadifferentacousticenvironment.

Lw=Lp+10logA...dB,re:1pW, whereAisthemeasurementnoise‐emissionareainsquaremetresinafreefield.

SOUNDTRANSMISSIONCLASS(STC)–Aninternationallystandardisedmethodofratingthesoundtransmissionlossofpartitionwallstoindicatethedecibelsofnoisereductionofahumanvoicefromonesidetotheother.(Refer:AustralianStandardAS1276–1979)

SOUNDTRANSMISSIONLOSS–Theamountindecibelsbywhicharandomsoundisreducedas it passes through a sound barrier. A method for the measurement of airborne SoundTransmissionLossofabuildingpartitionisgiveninAustralianStandardAS1191‐2002.

STATISTICALEXCEEDENCESOUNDLEVELS,LA90,LA10,LA1,etc–Noisewhichvariesinleveloveraspecificperiodoftime(usually15minutes)maybequantifiedintermsofvariousstatisticaldescriptors:

TheLA90isthedBAlevelexceededfor90%ofthetime.InNSWtheLA90ismeasuredoverperiodsof15minutes,andisusedtodescribetheaverageminimumorbackgroundnoiselevel.

TheLA10isthedBAlevelthatisexceededfor10%ofthetime.InNSWtheLA10measuredoveraperiodof10to15minutes. Itwasuntilrecentlyusedtodescribetheaveragemaximumnoiselevel,buthaslargelybeenreplacedbytheLAeqfordescribinglevel‐varyingnoise.

TheLA1 isthedBAlevelthat isexceededfor1%ofthetime. InNSWtheLA1maybeusedfordescribingshort‐termnoiselevelssuchascouldcausesleeparousalduringthenight.

STEADYNOISE–Noise,whichvariesinlevelby6dBAorless,overtheperiodofinterestwiththetime‐weightingsetto“Fast”,isconsideredtobe“steady”.(ReferAS1055.11997)

WEIGHTEDSOUNDREDUCTIONINDEX,Rw–Thisisasinglenumberratingoftheairbornesoundinsulationofawall,partitionorceiling.Thesoundreductionisnormallymeasuredoverafrequencyrangeof100to3,150HertzandaveragedinaccordancewithISOstandardweightingcurves(ReferAS/NZS1276.1:1999).

InternalpartitionwallRw+Cratingsarefrequencyweightedtosimulateinsulationfromhumanvoicenoise.TheRw+CisalwayssimilarinvaluetotheSTCratingvalue.Externalwalls,doorsandwindowsmaybeRw+Ctrratedtosimulateinsulationfromroadtrafficnoise.ThisisnormallyalowernumberthantheSTCratingvalue.

WHITE NOISE – Whitenoise isbroadbandrandomnoisewhosespectraldensity isconstantacrossitsentirefrequencyrange.Thesoundpoweristhesameforequalbandwidthsfromlowtohighfrequencies.Becausethehigherfrequencyoctavebandscoverawiderspectrum,whitenoisehasmoreenergyatthehigherfrequenciesandsoundslikeahiss.

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