San Francisco International Airport

 San Francisco International Airport Noise Study: Comprehensive community noise exposure analysis, focusing on low frequency noise generated by aircraft takeoffs with respect to the City of Millbrae community complaints. A diagnostic study was performed measuring event-based, discrete aircraft departures, community noise measurements, and aircraft noise modeling. Laboratory psychoacoustic tests were performed to analyze human annoyance…

Denver Airport

Aircraft: Noise measurement & modeling Community noise control Aircraft Noise originates from three dominant sources: aircraft systems, engine/ mechanical noise, and aerodynamic noise. Scientific medical studies abound conclude that aircraft noise clearly and significantly impairs human health. As Aerospace is an intrinsic part of modern transportation, aircraft noise analysis must be implemented for the protection…

Sprint Communications Site Santa Cruz, CA

Environmental noise modeling & mitigation Many environmental noise problems arise from conflicting land uses in dense settings. Since transportation and communications infrastructure is by definition more intensive in populated settings, noise generated by such infrastructure presents unique challenges. A new Sprint installation in Santa Cruz, CA by SiteMaster (who construct and maintain wireless sites), began…

Peninsula Pipelines San Francisco Bay Area

Many construction projects require advance planning to manage noise and vibration impacts on adjacent communities and structures, followed by careful monitoring to avoid exceeding local regulations.  We can monitor not only land-based projects, but also water-based projects such as the wildlife impact of pile-driving in bridge construction.  We own and maintain a full suite of…

Freescale Semiconductor Chandler, AZ

Noise and vibration are concerns in most industrial settings, and controlling them requires attention to a multitude of sources and receivers. Some high-tech manufacturing processes need extraordinary vibrational stability. All facilities include human occupants who need safe and productive environments. Workplace noise limits set by OSHA and other regulatory agencies are intended to protect workers…

Light / heavy rail: environmental noise & vibration

Infrastructure projects can pose unique challenges, arising from the construction processes required to build and maintain them. Our infrastructure work addresses all aspects of noise, vibration, and EMI/RF impacts, from worker safety & comfort to legal documentation for CEQA/NEPA, to meet environmental and community requirements, to unique project mitigations for technically-demanding neighbors such as high-tech…

Calaveras Dam Replacement Milpitas, CA

Construction noise monitoring Environmental impact noise testing The San Francisco Public Utilities Commission (SFPUC) contracted URS Corporation to conduct environmental analysis work on the Calaveras Replacement Dam Project. Dam construction required excavation of earth from one side of the reservoir, near a rural residential community. Per the California Environmental Quality Act (CEQA), URS was required…

The Beverly Wilshire (Los Angeles)

Commercial & office space: optimizing exterior & interior noise Acoustical and vibration design of commercial buildings is usually driven by human sensitivities.  The goal is to deliver healthy and productive work environments, from outdoor gathering spaces to private offices to telepresence suites.  In addition to routine architectural acoustics and mechanical noise control design, we offer…

Healthcare facilities & labs – Kaiser, Sutter, Cedars-Sinai & more

Healthcare facilities & labs: community noise & low-vibration Healthcare facilities present unique challenges for acoustical, noise and vibration design.  Medical buildings typically require substantial mechanical systems.  Noise from these can impact patients/staff and adjacent properties, leading to community noise issues, while vibration can affect sensitive instruments.  Patient privacy rules, OSHPD-driven limitations on noise control materials,…