Power Acoustics performed a noise impact study of sound related to the expansion of Suncoast Parkway 2 in Citrus County, Florida. We estimated the sound level of the Parkway expansion using the Department of Transportation Federal Highway Administration traffic noise model "TNM", the model specified by the Florida Department of Transportation. We also measured existing ambient sound levels at the neighboring homes with our long-term weatherproof sound monitors. The noise data along with the analytical modeling of the projected highway noise allowed us to simulate the effect of the expansion on the residential neighbors. The final report was used by the community for discussion with authorities on highway placement and possible noise control sound barriers and abatement.

Similar studies are performed for many Eminent Domain Cases.

While many communities are not within regulated noise abatement areas, it is often prudent to consider additional noise abatement for new homes. Power Acoustics performed noise testing of the existing area to determine if the sound of airplane and helicopter air traffic noise would cause problems for a potential residential community proposed to be built adjacent to the airport. One study consisted of measuring existing ambient sound levels near a Regional Airport over a period of several days and determining if noise abatement was necessary for the homes to meet the desired sound level.

New NextGen flight paths, a result of the FAA's program to modernize the nation's airspace, are also causing new residential concerns.

A residential developer wanted to place a new condominium adjacent to a railroad crossing and was worried that the train horns and whistles as well as general train rumble would cause a noise problem with the potential buyers of his condominium development. We evaluated the noise of the trains through sound level measurements and analysis. We later provided solutions to reduce the effects of the train noise including building wall construction improvements, high STC rated windows and suggested a wayside horn to the nearby crossing and sound barrier wall adjacent to the tracks.

Power Acoustics, Inc. typical involvement as an expert witness is related to projects in need of special use permits or zoning approvals. However, we also perform work in eminent domain issues, criminal cases, and various other situations requiring acoustical expertise.