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What is a 69 leq noise contour?

Contour leq noise
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What is a 69 leq noise contour?

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This is the area that, averaged out over a 16 hour summer day, is affected by a level of noise that is 69 decibels of noise or more. The Government publishes noise contour maps, based on the amount of noise over the area for a single year. This 69 Leq is for the year 2002.

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