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…contributed comments to these sections. Many thanks go to the authors (listed below, by paper): Environmental Impacts of Aviation on Human and Natural Resources Noise: Natalia Sizov (Federal Aviation Administration),…
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…HMMH is pleased to announce the opening of a new Southern California office! This new location strengthens HMMH’s California presence and includes staff experienced in our aviation, highway, rail,…
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…HMMH provided annual On-Board Sound Intensity (OBSI) tire/pavement noise measurement services to Continental Paving Inc., on behalf of the New Hampshire Department of Transportation (NHDOT), for two sites along…
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…(NOAA), under the Endangered Species Act (ESA) of 1973, as amended. As a result of this action, the Virginia Department of Transportation (VDOT) was required to address potential noise impacts…
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…goal. A spin-off from Bolt Beranek and Newman (BBN), HMMH’s founders worked on some of the earliest, ground-breaking transportation noise challenges, including early work for the Port Authority of New…
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…sound studies to assess potential noise exposure from a proposed wind turbine on neighbors, which is one of HMMH’s developing areas of specialty. While Portland was seasonally cool and rainy…
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…provided acoustical monitoring services in the early 2000s for the City of Inglewood, California Residential Sound Insulation Program. The City manages one of the LAWA programs to mitigate noise generated…
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…HMMH is assisting the Maryland Department of Transportation Maryland Aviation Administration (MDOT MAA) in the replacement of their noise and operations monitoring system (NOMS) at Baltimore/Washington International Thurgood Marshall…
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…starts to occur around 95-100 VdB, and this is only for minor cosmetic damage, such as small cracks in plaster. Because vibration, like noise, is measured on a decibel scale,…
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…of the internal combustion engine – 1895 – the most notable difference for me was the absence of low frequency noise. But add unmuffled cars and trucks (1935), with back…
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