1. hobbies and interests
2. guitar

MANAGING DIRECTORS
MATTHEW PALAVIDIS
VICTOR FATTORETTO
DIRECTORS
MATTHEW SHIELDS
BEN WHITE
MANAGING
DIRECTORS
MATTHEW PALAVIDIS
VICTOR FATTORETTO
GENERAL MANAGER
MATTHEW SHIELDS
18-22 Sturdee Parade, 27-29 Pacific Parade, Dee Why
DA Acoustic Assessment
SYDNEY
A: 9 Sarah St Mascot NSW 2020
T: (02) 8339 8000
F: (02) 8338 8399
SYDNEY MELBOURNE BRISBANE CANBERRA
LONDON DUBAI SINGAPORE GREECE
www.acousticlogic.com.au
ABN: 11 068 954 343
The information in this document is the property of Acoustic Logic Consultancy Pty Ltd ABN 11 068 954 343 and shall be returned on
demand. It is issued on the condition that, except with our written permission, it must not be reproduced, copied or communicated to
any other party nor be used for any purpose other than that stated in particular enquiry, order or contract with which it is issued.
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DOCUMENT CONTROL REGISTER
Project Number
Project Name
20130841.1
18-22 Sturdee Parade, 27-29 Pacific Parade,
Dee Why
DA Acoustic Assessment
20130841.1/1112A/R0/JZ
Email
Pinnacle Construction Group Pty Ltd
Mr Leon Kmita
Document Title
Document Reference
Issue Type
Attention To
Revision
Date
Document Reference
0
11/12/2013
20130841.1/1112A/R0/JZ
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Prepared
By
JZ
Checked
By
Approved
By
BW
2
TABLE OF CONTENTS
1
2
3
4
INTRODUCTION ................................................................................................................... 4
SITE DESCRIPTION ............................................................................................................... 5
NOISE DESCRIPTORS ............................................................................................................ 6
EXTERNAL NOISE INTRUSION ASSESSMENT ......................................................................... 7
4.1
PROJECT CRITERIA........................................................................................................ 7
4.1.1
State Environmental Planning Policy ........................................................................... 7
4.1.2
Australian Standard 2107:2000 ................................................................................... 8
4.1.3
Resultant Criteria ......................................................................................................... 8
4.2
TRAFFIC NOISE MEASUREMENTS ................................................................................. 9
4.2.1
Measurement Location ............................................................................................... 9
4.2.2
Measurement Period ................................................................................................... 9
4.2.3
Measurement Equipment ........................................................................................... 9
4.2.4
Measurement Results .................................................................................................. 9
4.3
EVALUATION OF NOISE INTRUSION............................................................................ 10
4.3.1
Recommended Glazing .............................................................................................. 10
4.3.2
Roof/Ceiling Construction ......................................................................................... 11
4.3.3
External Walls ............................................................................................................ 11
4.3.4
Mechanical Ventilation .............................................................................................. 11
5 NOISE EMISSION ASSESSMENT .......................................................................................... 12
5.1
BACKGROUND NOISE MONITORING .......................................................................... 12
5.2
ACOUSTIC OBJECTIVES ............................................................................................... 12
5.2.1
Warringah Council DCP.............................................................................................. 12
5.2.2
EPA Industrial Noise Policy ........................................................................................ 13
5.2.2.1 Intrusiveness Criterion .......................................................................................... 13
5.2.2.2 Amenity Criterion .................................................................................................. 13
5.2.2.3 Sleep Arousal ......................................................................................................... 14
5.2.3
Protection of the Environmental Operation Act Regulation ..................................... 14
5.2.4
Noise Emission Objectives ......................................................................................... 14
5.3
CARPARK NOISE ASSESSMENT ................................................................................... 15
5.4
GARBAGE TRUCK NOISE ASSESSMENT........................................................................ 16
5.5
MECHANICAL PLANT .................................................................................................. 16
6 CONCLUSION ..................................................................................................................... 17
APPENDIX 1: NOISE LOGGING DATA .......................................................................................... 18
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1
INTRODUCTION
This report presents an acoustic assessment to accompany the development application of the
proposed residential apartment development located at 18-22 Sturdee Pde, 27-29 Pacific Pde, Dee
Why.
In this report we have:

Identified environmental noise sources (mainly traffic noise) which may have impact on
the site and recommended acoustic treatments to ensure a reasonable level of amenity is
achieved for future occupants.

Setup criteria for environmental noise emissions from the operation of the development
(mechanical plant items and carpark)

Conduct initial noise emission assessment for the proposed carpark.
External noise impacts onto the site have been assessed in accordance with Warringah Council
requirements, NSW State Environment Planning Policy Infrastructure (2007) and Australian
Standard 2107.
Mechanical plant noise emission criteria have been determined in accordance with NSW EPA
Industrial Noise Policy.
The assessment is based on the architectural drawings provided by Marchese Partners dated
August 2013.
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2
SITE DESCRIPTION
The proposed development includes two residential apartment buildings, each building contains 7
storeys of residential apartments.
The site is bounded by Sturdee Parade to the south and Pacific Parade to the north. Both roads
carry low to medium amount of traffic. To the east of the site are existing residential apartment
buildings, to the west is Dee Why Grand which has commercial tenants on lower levels and
residential apartments on higher levels.
Figure 1 shows the site map and measurement locations.
Residential
Units
Building
Attended
Measurement
Residential
Apartments
Residential
Apartments
Project Site
Unattended
Noise
Monitor
Attended
Measurements
Residential
Units
Building
Figure 1: Site Map and Measurement Locations
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3
NOISE DESCRIPTORS
Traffic noise constantly varies in level, due to fluctuations in traffic speed, vehicle types, road
conditions and traffic densities. Accordingly, it is not possible to accurately determine prevailing
traffic noise conditions by measuring a single, instantaneous noise level. To accurately determine
the effects of traffic noise a 15-20 minute measurement interval is utilised. Over this period, noise
levels are monitored on a continuous basis and statistical and integrating techniques are used to
determine noise description parameters. These parameters are used to measure how much
annoyance would be caused by a particular noise source.
In the case of environmental noise three principle measurement parameters are used, namely L10,
L90 and Leq.
The L10 and L90 measurement parameters are statistical levels that represent the average
maximum and average minimum noise levels respectively, over the measurement interval.
The L10 parameter is commonly used to measure noise produced by a particular intrusive noise
source since it represents the average of the loudest noise levels produced by the source.
Conversely, the L90 level (which is commonly referred to as the background noise level) represents
the noise level heard in the quieter periods during a measurement interval. The L90 parameter is
used to set the allowable noise level for new, potentially intrusive noise sources since the
disturbance caused by the new source will depend on how audible it is above the pre-existing
noise environment, particularly during quiet periods, as represented by the L90 level.
The Leq parameter represents the average noise energy during a measurement period. This
parameter is derived by integrating the noise levels measured over the measurement period. Leq is
important in the assessment of traffic noise impact as it closely corresponds with human
perception of a changing noise environment; such is the character of traffic noise.
Current practice favours the Leq parameter as a means of measuring traffic noise, whereas the L10
parameter has been used in the past and is still incorporated in some codes. For the reasons
outlined above, the L90 parameter is not used to assess traffic noise intrusion.
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4
EXTERNAL NOISE INTRUSION ASSESSMENT
The main environmental noise sources on site are from the traffic on Sturdee Parade and Pacific
Parade.
4.1 PROJECT CRITERIA
Warringah Council does not specify any requirement for internal noise levels for residential
development. Therefore, the NSW State Environmental Planning Policy Infrastructure (2007) and
Australian Standard 2107:2000 will be used to determine the internal noise criteria.
4.1.1
State Environmental Planning Policy
The NSW Department of Planning’s policy, Development Near Rail Corridors And Busy Roads –
Interim Guideline, sets out internal noise level criteria adapted from the State Environmental
Planning Policy (Infrastructure) 2007 (the ‘Infrastructure SEPP’) for developments with the
potential to be impacted by traffic or rail noise and vibration.
The Infrastructure SEPP defines busy roads that are subject to an acoustic assessment as:
“Clause 102: development for any of the following purposes that is on land in or adjacent to a
road corridor for a freeway, a tollway or a transit way or any other road with an annual average
daily traffic volume of more than 40,000 vehicles (based on the traffic volume data available on
the website of the RTA) and that the consent authority considers is likely to be adversely affected
by road noise or vibration:




building for residential use
a place of public worship
a hospital
an educational establishment or childcare.”
The Infrastructure SEPP sets out the following criteria for internal noise levels from airborne traffic
noise:
“For Clauses 87 (Rail) and 102 (Road):
“If the development is for the purpose of a building for residential use, the consent
authority must be satisfied that appropriate measures will be taken to ensure that the
following LAeq levels are not exceeded:
in any bedroom in the building : 35dB(A) at any time 10pm–7am
anywhere else in the building (other than a garage, kitchen, bathroom or hallway): 40dB(A)
at any time.”
Internal requirements are for residential spaces and are measured internally with windows closed.
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4.1.2
Australian Standard 2107:2000
Australian Standard 2107:2000 “Recommended design sound level and reverberation times for
building interiors” also specifies the recommended internal noise levels for residential receivers,
detailed below.
Type of occupancy/activity
Recommended design sound level,
LAeq(1hour), dB(A)
Houses and apartment near
minor road –
4.1.3
Living areas
40
Sleeping areas
35
Resultant Criteria
Given that both Sturdee Parade and Pacific Parade do not have more than 20,000 AADTV. The
Australian Standard 2107 criteria will be adopted by this project.
Table 1 - Internal Traffic Noise Criteria
Space/Activity Type
Noise Level
Living Area (24 hours)
40 dB(A) Leq (1 hour)
Bedroom (10pm-7am)
35 dB(A) Leq (1hour)
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4.2
TRAFFIC NOISE MEASUREMENTS
Traffic noise measurements were conducted using both unattended long-term noise monitor and
attended measurements. Measurements were performed generally in accordance with the
Australian Standard AS1055 – “Description and measurement of environmental noise – General
Procedures”.
4.2.1 Measurement Location
The long-term unattended noise monitor was setup near the southern boundary of the site,
approximately 5m from the Sturdee Parade. The monitor had an unrestricted view of the road.
Supplementary attended measurements were taken along Sturdee Parade and Pacific Highway, as
indicated in Figure 1.
4.2.2 Measurement Period
The long-term monitoring was conducted from 6th September 2013 to 12th September 2013.
The attended measurement were taken on the 5th September 2013 between 4pm and 5pm.
4.2.3 Measurement Equipment
The long term monitoring was conducted using an Acoustic Research Laboratories Pty Ltd noise
logger. The logger was set to A-weighted fast response and was programmed to store 15-minute
statistical noise levels throughout the monitoring period. The monitor was calibrated at the start
and end of the monitoring period using a Rion NC-73 calibrator. No significant drift was noted.
Attended measurements were undertaken using a Norsonic 140 sound level analyser, set to Aweighted fast response. The sound level analyser was calibrated before and after the
measurements, no significant drift was noted.
4.2.4 Measurement Results
The traffic noise levels listed in Table 2 were determined based on the logging data and manned
measurements. In determination of acoustic treatments, the measured level is adjusted for
distance and orientation.
Table 2 – External Noise Level (Traffic Noise)
Location
Future Southern Façade
Future Northern Façade
Time Period
Traffic Noise Level
Day (7am – 10pm)
59 dB(A)LAeq (1hr)
Night (10pm – 7am)
55 dB(A)LAeq (1hr)
Day (7am – 10pm)
62 dB(A)LAeq (1hr)
Night (10pm – 7am)
58 dB(A)LAeq (1hr)
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4.3
EVALUATION OF NOISE INTRUSION
Internal noise levels will primarily be as a result of noise transfer through the windows and doors
and roof, as these are relatively light building elements that offer less resistance to the
transmission of sound.
The predicted noise levels through the windows, doors and roof are discussed below. The
predicted noise levels have been based on the measured level and spectral characteristics of the
external noise, the area of building elements exposed to aircraft, traffic and train noise, the
absorption characteristics of the rooms and the noise reduction performance of the building
elements.
Calculations were performed taking into account the orientation of windows, barrier effects
(where applicable), the total area of glazing, facade transmission loss and the likely room sound
absorption characteristics. In this way the likely interior noise levels can be predicted.
4.3.1
Recommended Glazing
The recommended glazing assemblies are indicated in Table 3 below. The glazing thicknesses
recommended are those needed to satisfy acoustic requirements and do not take into account
other requirements such as structural, safety or other considerations. These additional
considerations may require the glazing thickness to be increased beyond the acoustic
requirement.
Table 3 –Glazing Requirements
Building
Sturdee
Parade
Building
Space
Bedroom
Living Area
Bedroom
Pacific Parade
Building
Living Area
Façade
Glazing Thickness
Acoustic Seals
South
6mm float
Yes
South, East & North
4mm float
Yes
South
6mm float
Yes
South, East & North
4mm float
Yes
North
6.38mm laminated
Yes
East & West
6mm float
Yes
South
4mm float
Yes
North
6.38mm laminated
Yes
East & West
6mm float
Yes
South
4mm float
Yes
In addition to complying with the minimum scheduled glazing thickness, the STC/Rw rating of the
glazing fitted into operable frames and fixed into the building opening should not be lower than
the values listed in the Table 4 below.
Where nominated, this will require the use of acoustic seals equal to Schlegel Q-lon series
(acoustic bulb seal) around the full perimeter of operable frames. The frame will need to be sealed
into the building opening using a flexible 100% polyurethane sealant equal to Bostik Seal N’ Flex.
Note that mohair seals and/or mohair/plastic fin combination seals in windows and doors are not
acceptable where acoustic seals are required.
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It is recommended that only window systems have test results indicating compliance with the
required ratings obtained in a certified laboratory be used where windows with acoustic seals
have been recommended.
Table 4 – Minimum STC/Rw of Glazing Requirements
4.3.2
Glazing Assembly
Acoustic Seals
Minimum STC/Rw of Installed
Window
4mm float
Yes
27
6mm float
Yes
29
6.38mm laminated
Yes
31
Roof/Ceiling Construction
The roof is proposed to be constructed of concrete slab. This is acoustically satisfactory does not
require any upgrades.
4.3.3
External Walls
External walls of masonry construction are acoustically satisfactory and do not require any
upgrade.
4.3.4 Mechanical Ventilation
It is recommended by NSW Road Noise Policy that alternative outside air source be installed to
units that internal noise levels cannot be achieved with windows open. However, this is not a
mandatory requirement and the following recommendations are optional.
In this project, units with windows not facing Sturdee Parade or Pacific Parade can be open and
still achieve the required internal noise levels. No mechanical ventilation is required.
However, in case any mechanical ventilation system that may be installed should be designed such
that the acoustic performance of the recommended constructions (presented above) are not
reduced by any duct or pipe penetrating the wall/ceiling/roof. Noise emitted to the property
boundaries by any ventilation system shall comply with EPA and Council requirements.
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5
NOISE EMISSION ASSESSMENT
The main noise sources from the development will be those from mechanical plant serving the site
and the tenants using the proposed underground carpark.
Detailed mechanical equipment selection and layouts are not available at this stage. The external
noise emission criteria are set up in this section of the report to ensure that the acoustic amenity
of nearby residents is not adversely affected.
The potentially affected residential receivers are the apartment buildings adjacent to the site to
east and west.
5.1
BACKGROUND NOISE MONITORING
The same unattended noise monitor was used for background noise monitoring as well. The
measured background noise levels are presented in Table 5 below.
Table 5 – Measured Background Noise Levels
Period/Time
Assessment
Background Noise Level
dB(A) L90
Day (7am-6pm)
45
Evening(6pm-10pm)
42
Night(10pm-7am)
37
Location
Sturdee Parade
5.2 ACOUSTIC OBJECTIVES
The following documents were used to determine the project criteria for noise emission:



Warringah Council DCP
NSW EPA Industrial Noise Policy
Protection of the Environmental Operation Act Regulation 2000
5.2.1 Warringah Council DCP
Warringah Council DCP has the following control over noise emission.
“Part D Design
D3 Noise
Requirements
1. Noise from combined operation of all mechanical plant and equipment must not generate noise
levels that exceed the ambient background noise by more than 5dB(A) when measured in
accordance with the NSW Industrial Noise Policy at the receiving boundary of residential and other
noise sensitive land uses.”
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5.2.2
EPA Industrial Noise Policy
The EPA Industrial Noise Policy, has two criteria which need to be satisfied namely Intrusiveness
and Amenity.
The EPA Industrial Noise Policy sets out acceptable noise levels for various localities. Table 2.1 on
page 16 of the policy indicates 4 categories to distinguish different residential areas. They are
rural, suburban, urban and urban/industrial interface. Under the policy the nearest residence
would be assessed against the urban criteria.
Noise levels are to be assessed at the property boundary or nearby dwelling, or at the balcony or
façade of an apartment.
5.2.2.1 Intrusiveness Criterion
The guideline is intended to limit the audibility of noise emissions at residential receivers and
requires that noise emissions measured using the Leq descriptor not exceed the background noise
level by more than 5dB(A). Where applicable, the intrusive noise level should be penalised
(increased) to account for any annoying characteristics such as tonality.
Background noise levels adopted are presented in Section 4.1. Noise emissions from the site
should comply with the noise levels presented below when measured at nearby property
boundary.
5.2.2.2
Amenity Criterion
The guideline is intended to limit the absolute noise level from all noise sources to a level that is
consistent with the general environment.
The EPA’s Industrial noise policy sets out acceptable noise levels for various localities. Table 2.1 on
page 16 of the policy indicates 4 categories to distinguish different residential areas. They are
rural, suburban, urban and urban/industrial interface. This site is categorised by the residential
receivers as suburban.
For the purposes of this condition:



Day is defined as the period from 7am to 6pm Monday to Saturday and 8am to 6pm
Sundays and Public Holidays;
Evening is defined as the period from 6pm to 10pm.
Night is defined as the period from 10pm to 7am Monday to Saturday and 10pm to 8am
Sunday and public holidays.
Table 6 – EPA Amenity Noise Levels
Type of Receiver
Residential - Suburban
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Time of day
Recommended Noise Level
dB(A)Leq(period)
Recommended
Maximum
Day
55
60
Evening
45
50
Night
40
45
13
5.2.2.3
Sleep Arousal
To minimise the potential for sleep arousal the L1 (1 minute) noise level of any specific noise source
does not exceed the background noise level (L90) by more than 15 dB(A) outside a resident’s
bedroom window between the hours of 10pm and 7am.
The L1 noise level is the level exceeded for 1 per cent of the time and approximates the typical
maximum noise level from a particular source. Where the typical repeatable existing L1 levels
exceed the above requirement then the existing L1 levels form the basis for, sleep disturbance
criteria.
5.2.3
Protection of the Environmental Operation Act Regulation
Protection of the Environmental Operations regulation limits the noise levels associated within the
operation of domestic air conditioning criteria during night time periods which is presented below:
Protection of the Environmental Operations (Noise Control) Regulation 2000-Sect 52
52
Air Conditioners
(1) A person must not cause or permit an air conditioner to be used on residential premises in such
a manner that it emits noise that can be heard within a habitable room in any other residential
premises (regardless of weather any door or window to that room is open):
(a) before 8 am or after 10 pm on any Saturday, Sunday or public holiday, or
(b) before 7 am or after 10 pm on any other day.
5.2.4
Noise Emission Objectives
Based on the requirements stated in the sections above, Table 7 provides a summary of the
assessment criteria applicable to the future residential development at the project site. The
assessment criteria are also based on the ambient noise monitoring conducted at the site.
Table 7 – Environmental Noise Emission Criteria
Time
Period
Assessment
Background
Noise Level
dB(A)L90
Amenity
Criteria
dB(A) Leq
Intrusiveness
Criteria
Background +
5 dB(A)
Leq(15min)
EPA Criteria
for Residential
Condensers
EPA Criteria for
Sleep
Disturbance
dB(A) L1(1minute)
Day
45
55
50
N/A
N/A
Evening
42
45
47
N/A
N/A
Night
37
40
42
Inaudible within
neighbouring
premises
52
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5.3
CARPARK NOISE ASSESSMENT
The proposed carpark includes three level of basement parking levels, contains a total of 300
parking spaces, 162 spaces for the Sturdee Parade building and 138 spaces for Pacific Parade.
There are separate entrances for each building, however, both entrances for the carpark are near
the eastern boundary of the site, potential have the most impact of the residential apartment to
the east.
The vehicle noise from the proposed carpark has been predicted to the nearest receivers. The
prediction is based on the assumptions below:



We assume that peak hour will occur during the day time and during peak hours, the
usage of the carpark will be approximately 50% of its capacity.
During night time, the carpark will be less frequently used, we assume a maximum usage
of 10% of the capacity.
Vehicles move at 10km/hour speed with typical sound power level 85 dB(A) (noise data
from other projects conducted by this office).
Predicted noise levels are presented below:
Table 8 – Predicted Noise Levels from Carpark Movements
Location
Time of Day
Predicted Level
dB(A)Leq
Noise Objective
dB(A)Leq(15min)
Complies
Apartment to the
East
Day
44
50
Yes
Night
37
40
Yes
Day
39
50
Yes
Night
32
40
Yes
Day
39
50
Yes
Night
32
40
Yes
Apartment to the
south across
Sturdee Parade
Apartment to the
north across
Pacific Parade
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5.4
GARBAGE TRUCK NOISE ASSESSMENT
The garbage loading area is located near the eastern boundary of site, it will have the most impact
to the residential to the east.
The prediction is based on the assumptions below:


Garbage collection will only happen once a week and typically during day time.
Truck move at 10km/hour speed with typical sound power level 100 dB(A) (Noise data
from other projects conducted by this office).
Table 9 – Predicted Noise Levels from Carpark Movements
Location
Time of Day
Predicted Level
dB(A)Leq
Noise Objective
dB(A)Leq(15min)
Complies
Apartment to the
East
Day
45
50
Yes
Apartment to the
south across
Sturdee Parade
Day
35
50
Yes
Apartment to the
north across
Pacific Parade
Day
35
50
Yes
5.5
MECHANICAL PLANT
Detailed plant selection has not been undertaken at this stage, as plant selections have not been
determined. Detailed acoustic review should be undertaken at CC stage to determine acoustic
treatments to control noise emissions to satisfactory levels. Satisfactory levels will be achievable
through appropriate plant selection and location and, if necessary, standard acoustic treatments
such as duct lining, acoustic silencers and enclosures.
Noise emissions from all services plant to the closest residential receiver should comply with the
noise emission criteria in Section 5.2.
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6
CONCLUSION
This report presents our acoustic assessment for the proposed residential development at 18-22
Sturdee Parade, 27-29 Pacific Parade, Dee Why.
Noise intrusion impact from traffic noise onto the future occupants of the development has been
assessed in accordance with Australian Standard 2107:2000 and NSW State Environmental
Planning Policy Infrastructure (2007). The acoustic treatments in principle necessary to achieve
these guidelines have been set out in Section 4.3.
Noise emissions criteria for the site have been determined based on the on-site noise logging,
Warringah Council DCP, EPA NSW Industrial Noise Policy and Protection of the Environmental
Operation Act Regulation. These have been presented in Section 5.
Please contact us should you have any further queries.
Yours faithfully,
Acoustic Logic Consultancy Pty Ltd
Johnny Zhang
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APPENDIX 1: NOISE LOGGING DATA
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18 Sturdee Pde, Dee Why_Sta_graphed
Time
0:00
23:00
22:00
21:00
20:00
19:00
18:00
17:00
16:00
15:00
14:00
13:00
12:00
11:00
10:00
9:00
8:00
7:00
6:00
5:00
4:00
3:00
2:00
1:00
0:00
Noise Level (dB(A))
dee why
Friday September 6,2013
90
80
70
L10
60
Leq
50
40
L90
30
20
18 Sturdee Pde, Dee Why_Sta_graphed
Time
0:00
23:00
22:00
21:00
20:00
19:00
18:00
17:00
16:00
15:00
14:00
13:00
12:00
11:00
10:00
9:00
8:00
7:00
6:00
5:00
4:00
3:00
2:00
1:00
0:00
Noise Level (dB(A))
dee why
Saturday September 7,2013
90
80
70
L10
60
Leq
50
40
L90
30
20
18 Sturdee Pde, Dee Why_Sta_graphed
Time
0:00
23:00
22:00
21:00
20:00
19:00
18:00
17:00
16:00
15:00
14:00
13:00
12:00
11:00
10:00
9:00
8:00
7:00
6:00
5:00
4:00
3:00
2:00
1:00
0:00
Noise Level (dB(A))
dee why
Sunday September 8,2013
90
80
70
L10
60
Leq
50
40
L90
30
20
18 Sturdee Pde, Dee Why_Sta_graphed
Time
0:00
23:00
22:00
21:00
20:00
19:00
18:00
17:00
16:00
15:00
14:00
13:00
12:00
11:00
10:00
9:00
8:00
7:00
6:00
5:00
4:00
3:00
2:00
1:00
0:00
Noise Level (dB(A))
dee why
Monday September 9,2013
90
80
70
L10
60
Leq
50
40
L90
30
20
18 Sturdee Pde, Dee Why_Sta_graphed
Time
0:00
23:00
22:00
21:00
20:00
19:00
18:00
17:00
16:00
15:00
14:00
13:00
12:00
11:00
10:00
9:00
8:00
7:00
6:00
5:00
4:00
3:00
2:00
1:00
0:00
Noise Level (dB(A))
dee why
Tuesday September 10,2013
90
80
70
L10
60
Leq
50
40
L90
30
20
18 Sturdee Pde, Dee Why_Sta_graphed
Time
0:00
23:00
22:00
21:00
20:00
19:00
18:00
17:00
16:00
15:00
14:00
13:00
12:00
11:00
10:00
9:00
8:00
7:00
6:00
5:00
4:00
3:00
2:00
1:00
0:00
Noise Level (dB(A))
dee why
Wednesday September 11,2013
90
80
70
L10
60
Leq
50
40
L90
30
20
18 Sturdee Pde, Dee Why_Sta_graphed
Time
0:00
23:00
22:00
21:00
20:00
19:00
18:00
17:00
16:00
15:00
14:00
13:00
12:00
11:00
10:00
9:00
8:00
7:00
6:00
5:00
4:00
3:00
2:00
1:00
0:00
Noise Level (dB(A))
dee why
Thursday September 12,2013
90
80
70
L10
60
Leq
50
40
L90
30
20