Redondo Beach City Council
February 20, 2024

~ MDHearing Vacuum Hairdryers, Nightclubs,
Normal Moderate cleaners, blenders, sporting Jackhammers, breathing A whisper rainfall traffic events ambulances
Decibels 10 20 30 40 50 60 70 80 90 100 110 120 130 140 (dB)
The softest Leaves Refrigerator, Normal Police siren, Motorcycles, Thunder, Fireworks, sound one a quiet office conversation, a noisy hand dryers concerts, gunshot can hear dishwashers restaurant jet plane
watch
Soft, safe noise levels Moderate Loud Very loud, Painful, dangerous over dangerous
30 minutes noise levels
140dB Upper threshold of pain
140 dB
Aircraft
130 dB 120-140
taking off
120-130 Rivet hammer
120 dB
110-120 Angle grinding
110 dB 100-120 Chain saw
Highly
hazardous
100 dB
90-100 Power tools
90 dB
Hazardous 80-90 Busy restaurant
80 dB
70-80 City street
70-75 Loud radio
70 dB
60 dB
Annoying,
irritating. 50-60 Normal conversation
speech 50 dB
masking
40-45 Quiet office
40 dB
30-40 Quiet bedroom
30 dB
Typical 20 dB
noise
levels
10 dB
0 dB 0 Threshold of hearing