Greenacres, WA Land Info. Washington is the country's 18th largest agricultural state. In 2014, the agricultural sector contributed $7.53 billion to the Washington economy, or two percent of overall state GDP (placing it eighth among all U.S. states for the size of its farm economy).
Zero decibels is the threshold of human hearing, 40 to 50 decibels is normal for a peaceful neighborhood, 70 to 80 decibels is the level adjacent to a busy urban street or 50 feet from a major freeway, and 120 to 140 decibels is a typical level at which sound is painful.ero decibels is the threshold of human hearing, 40 to 50 decibels is normal for a peaceful neighborhood, 70 to 80 decibels is the level adjacent to a busy urban street or 50 feet from a major freeway, and 120 to 140 decibels is a typical level at which sound is painful.
To put it simply, this means that an increase of 10 decibels means the sound is ten times louder. So a noise measurement of 80 dB is ten times louder than a sound measured at 70 dB! As a frame of reference, here are the decibel levels of sounds you may encounter in your everyday life.0-30 dB, Very Faint.Most human adults cannot hear sounds below 0 decibels.Most sound in this range is almost inaudible.o a noise measurement of 80 dB is ten times louder than a sound measured at 70 dB! As a frame of reference, here are the decibel levels of sounds you may encounter in your everyday life. 0-30 dB, Very Faint. Most human adults cannot hear sounds below 0 decibels. Most sound in this range is almost inaudible.