Noise - EPA Protective Levels

The noise level should not exceed certain values to protect public health and welfare.

Sponsored Links

According to the Environmental Protection Agency - EPA - the Day-Night Sound Levels - L_dn - and the Equivalent Sound Level - L_eq - should not exceed certain limits to protect public health and welfare.

Values that should not be exceeded:

Effect	Level	Area
Hearing	L_eq(24) < 70 dB_A	All areas
Outdoor activity interference and annoyance	L_eq < 55 dB_A	Outdoors in residential areas and farms where people spend varying amounts of time in which quiet is a basis for use
Outdoor activity interference and annoyance	L_eq(24) < 55 dB_A	Outdoor areas where people spend limited time such as school yards playgrounds, etc.
Indoor activity interference and annoyance	L_eq < 45 dB_A	Indoor residential areas
Indoor activity interference and annoyance	L_eq(24) < 45 dB_A	Indoor areas with human activities such as schools, etc.

Outdoor yearly L_dn levels protect public health and welfare if they do not exceed 55 dB in sensitive areas as residences, schools, hospitals, etc.
Inside buildings yearly L_dn levels protect public health and welfare if they do not exceed 45 dB.

Note! To protect against hearing damage, one's 24-hour noise exposure at the ear should not exceed 70 dB.

Related Documents

Life Expectancy - Age and life expectancy for men and women.
Noise - Acceptable dB_A Level - Acceptable noise - dB_A - level at typical common locations.
Noise Exposure - Permissible Level and Duration - Exposure to noise should be controlled so that it is less than a maximum combination of exposure level and duration.
PNC - the Preferred Noise Criterion - A noise measurement system for continuous or ambient noise in indoor environments.
Preferred Noise Criterion (PNC) - Calculator - An online Preferred Noise Criterion (PNC) calculator.
SIL - the Speech Interference Levels - Background noise frequencies that interferes with speech.
Sound - Hearing Threshold vs. Age - Shift in hearing threshold for men and women vs. age.
Sound - L_dn - Day and Night Level - The EPA A-weighted sound level day and night equivalent definition - L_dn - for a 24 hour period.
Sound - L_eq - Equivalent Level - The EPA Equivalent Sound Level - L_eq - quantifies the noise environment to a single value of sound level for any desired duration.
Sound Propagation - the Inverse Square Law - Doubling of the distance from a noise source reduces the sound pressure level with 6 decibel.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.

Noise - EPA Protective Levels

The noise level should not exceed certain values to protect public health and welfare.

Related Topics

Related Documents

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

Privacy

Advertise in the ToolBox

Citation

Scientific Online Calculator