Environmental Noise Evaluations
	Environmental noise can impact restaurants, offices and the peace and quiet of residential and guest living. Standards have been established by the Environmental Protection Agency, Office of Noise Abatement, which have been adopted by many of the Cities of Washington State. An environmental noise control evaluation involves placing monitors at the site,and developing a source-path-receiver model to predict interior noise levels.
Recommendations are then provided, when necessary, to improve the windows and walls to achieve the design criteria. Method of Evaluation Evaluations are completed by stationing monitors at critical site locations where traffic from cars, buses, and planes can best be evaluated for their impact to the site. These monitors are typically hidden and secured to a tree or building and left for a period of 2 to 4 days. Data collected by monitors include the average noise level for each hour and for a 24-hour period. In addition, events that exceed programmed limits are documented for the duration, time-of-day, sound level, and highest sound level.