Attachment 5 - Environmental Noise Assessment

Chart of Noise Level Descriptors

 

95

 

 

Train Pass-by
/ Heavy Truck Pass-by
5 |. Lmax=85 dBA:
Leq (60s)=75 dBA

a \ max =77 d8A———#
2
=
=
$ 65
=
3
<
3 $5

45

a — na —— A -¥

1 10 20 30 40 50

Time (seconds)

=——=Leq (60s) —@—Sound Levels (dBA)

Typical Noise Levels

 

 

Threshold of pain

130 dB
Pneumatic drill

120 dB

Loud car horn

one metre away

110 dB

Airport

100 dB

2 Pa@ ME inside underground train or
Se alongside mainline railway
mm 869008

inside bus

80 dB

Busy residential road

70 dB

Conversational speech

60 dB

Living room with music or

television playing quietly

50 dB

Quiet office

40 dB
Bedroom

30 dB
Recording studio

20 dB
Broadcasting studio

20 Pi

 

10 dB
Threshold of hearing

0.00002 P3 gees gee = 0 dB

< ‘o Po
af age

  

 

 

 

Ref: 21030929 - o1a

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