Residential and Mixed Use

Trevor Cheng holds a bachelor of applied science (engineering physics) from University of British Columbia and joined BKL in January 2016, with experience in environmental and architectural acoustics, as well as condition monitoring, and machine vibration analysis and diagnostics.

With BKL, Trevor has primarily been involved in transportation, commercial, industrial, and infrastructure projects. His work experience includes measuring baseline noise conditions, predicting future noise environments, assessing noise impact, and offering mitigation measures where appropriate.

Trevor also has experience in architectural acoustics, working on hospitals, performance spaces, and multipurpose buildings. He is proficient in measuring noise insulation performance, reviewing building designs, and predicting noise levels from HVAC equipment.

Prior to joining BKL, Trevor worked in London, UK, on a wide variety of projects ranging from large-scale architectural renovations to major airport improvement works. He has unique experience in measuring and assessing noise and vibration in buildings from underground rail sources.

He also has experience using sound level meters by Brüel & Kjær, Norsonic, and Larson Davis, and software tools such as Cadna/A. He is familiar with ASTC/AIIC testing and using acoustic software including Insul, SONarchitect, and EASE for indoor noise predictions.

Trevor is a member of the Institute of Acoustics (IOA) in the UK.

Joonas Niinivaara has practiced as an acoustical consultant since 2007 and joined BKL in May 2019. During his career, Joonas has conducted extensive acoustical measurements, assessments, and mitigation treatments on a variety of community, commercial, and residential projects in both Europe and Canada.

In 2017, Joonas co-authored multiple publications for the Canadian Acoustical Association on the acoustical performance of wood-frame double-shear wall assemblies and laminated drywall assemblies in concrete frame buildings. He has also presented papers on acoustical design in modern offices buildings to the Baltic Nordic Acoustic Group.

Joonas has recently worked under the TARION Builder Bulletin 19R program for multi-occupancy buildings. In this, he has assisted project design teams, general contractors, and subtrades to achieve adequate acoustical conditions for all occupants by minimizing noise-related warranty claim risks from integrated building systems, while also maximizing acoustical privacy between adjacencies.

As a professional acoustician, Joonas has a particular interest in room acoustics related to concert halls, rehearsal rooms, and music facilities. He is proficient with ray-tracing computational software including ODEON, EASE, Pottorff AIM, and Insul software.

A graduate of the University of Victoria, Andrew Williamson holds a bachelor’s degree in mechanical engineering and has practiced as an acoustical consultant in BC for over two decades. He joined BKL in 2023.

During his career, Andrew has worked on numerous projects involving environmental noise assessments, building noise and vibration control, and architectural acoustics. As a project manager, Andrew has led acoustics teams on a variety of projects across sectors including cultural and recreation, education and research, health care, industrial, commercial, and residential.

Andrew has attended public meetings, open houses, and government-sponsored working groups to present and discuss technical information with the public, municipal councils, and members of the government and other organizations. In addition, Andrew has acted as an expert witness in BC Supreme Court and participated in a joint review panel hearing for the environmental assessment of a major infrastructure project.

Andrew is a Professional Engineer registered with Engineers and Geoscientists BC.