 |
|
|
|
|
Many sections of the SF General Plan reference the city's respect for quiet residential neighborhoods. The Inner Mission, Potrero Hill and the Bayview do not need the added danger and noise of a helicopter hub in our neighborhoods.
There are many schools in the area: children need sleep and quiet classrooms in order to learn. Churches, hospitals and nursing homes also have a right to a quiet environment. In fact, SFGH has signs if front saying 'QUIET HOSPITAL ZONE'.
The San Francisco Department of Public Health has found that noise from traffic is putting nearly 1 in 6 San Francisco residents at risk for heart disease, high blood pressure and other stress-related illnesses.
Noise - especially at night - can keep people awake, adding to their stress level. And that, in turn, can contribute to high blood pressure, heart disease, depression and digestive problems, said Rivard, pointing to findings by the World Health Organization and the U.S. Environmental Protection Agency.
San Francisco Noise Map:
Here is additional important documentation around noise:
Comparative Noise Levels:
| Sound |
Decibel Level |
Time Permitted |
|
| Rustling Leaves |
20 dB |
No Limit |
|
| Whispering |
25 dB |
No Limit |
|
| Library |
30 dB |
No Limit |
|
| Refrigerator |
45 dB |
No Limit |
|
| Average Home |
50 dB |
No Limit |
|
| Clothes Dryer |
60 dB |
No Limit |
A clothes dryer sounds twice as loud as the ambient noise in an average home. |
| Washing Machine |
65 dB |
No Limit |
|
| Car |
70 dB |
No Limit |
A car engine sounds twice as loud as a clothes dryer. |
| Busy Traffic |
75 dB |
No Limit |
|
| Mini Bike |
80 dB |
No Limit |
Mini-bike another doubling of perceived sound. |
| Electric Shaver |
85 dB |
No Limit |
|
| Screaming Child |
85 dB |
8 Hours |
Screaming child again twice as loud as the mini-bike, another 100% increase. |
| Passing Motorcycle |
95 dB |
8 Hours |
|
| Jack Hammer |
100 dB |
2 Hours |
Jackhammer another doubling of the noise level. |
| Helicopter |
105 dB |
1 Hour |
Helicopter is 50% louder than a jackhammer. |
|
|
|
|
|
|
|
|
|
|
