Noise PollutionNoise PollutionApril 25/26, 2011

GIVE ME YOUR $$GIVE ME YOUR $$

I need $4.75 from each of you before Thursday.

You need to alert your teachers that you will be absent for

Parent Chaperones: I need 3!!!

They will get a free movie ticket

NP StandardsNP StandardsSWBAT describe what noise pollution and know its short-term and long-term health effects.

SWBAT explain what a decibel is and what it’s used for.

SWBAT describe what methods are used to prevent NP

DefinitionDefinitionSound becomes unwanted when it interferes with normal activities, or disrupts or diminishes one’s quality of life.

What is noise?What is noise?

Decibel (dB)Decibel (dB)

The unit used to measure the intensity of a sound

On the decibel scale, the smallest audible sound is 0dB

A sound 10 times more powerful is 10 dB.

A sound 100 times more powerful than near total silence is 20 dB.

A sound 1,000 times more powerful than near total silence is 30 dB.

NoiseNoiseDistance affects the intensity of sound

If you are far away, the power is greatly diminished

Any sound above 85 dB can cause hearing loss!

The loss is related to the intensity and length of exposure

Common Sounds and Common Sounds and their decibel ratings:their decibel ratings:

Near total silence - 0 dB

A whisper - 15 dB

Normal Conversation - 60 dB

A lawnmower - 90 dB

A rock concert or a jet engine - 120 dB

A gunshot or firecracker - 140 dB

Health EffectsHealth EffectsNoise pollution adversely affects the lives of millions of people.

Studies have shown that there are direct links between noise and health.

Noise-Related Noise-Related IllnessesIllnesses

High blood pressure

Speech interference

Sleep Disruption

Bulimia

Depression

Noise Induced Hearing Loss (NIHL)

Office of Noise Office of Noise Abatement and Abatement and Control (ONAC)Control (ONAC)

Established by the EPA to carry out investigations and studies on noise and its effect on the public health and welfare.

Shut down in 1981: EPA concluded that noise issues were best handled at the State and Local level.

Noise Control Act Noise Control Act (1972)(1972)

Establishes a national policy to prevent NP

How?

Coordinates federal research and activities in noise control

Established federal noise emission standards for products sold in commerce

Provides information to the public regarding noise emission and noise reduction

EPAEPASome noise sources are still regulated by the EPA:

Rail and motor carriers

Construction Equipment

Trucks and motorcycles

EPA also controls labeling of hearing protection devices.

Control MeasuresControl MeasuresRoadway noise can be reduced through the use of noise barriers, speed limits, and traffic control technology

Aircraft noise can be reduced by: quieter jet engines, and rescheduling take off and landing times

Control MeasuresControl MeasuresIndustrial noise can be reduced by installing noise barriers in the workplace

Residential noise (power tools, loud radios) can be controlled though local laws and enforcement.

Community PosterCommunity PosterA company wants to come to East LA to build a new storage lot for garbage trucks. The parking lot would create a 200% increase in suburban traffic.

Audience: The East LA community

Explain what noise pollution is.

Explain the health effects of NP (long and short-term)

Come up an alternative solution.