Note: the volume level for each area of work as per point 1 m to bring the volume to make the border zone in the map to determine the point in the functioning.
Volume know each working area is divided by a percentage point to 1 meter volume had to make a sound boundary line in the chart. To determine the volume of work.
The loud volume each area work divided into point 1 meters. To bring the volume to the do bound sound in the map. To determine the point of noise in work.