We are seeking an experienced acoustician to assume leadership of our Seattle office when the current managing Principal retires at the end of the year. Find out more HERE.

Celebrating 30 years with the firm, Derek is experienced in many areas of practice including rail/transit, environmental, construction, forensic, and industrial. In addition to his project work and role on legal cases, as company President, he is an integral part of overseeing the companies operations and business development.


We are Small Business Enterprise (SBE) certified by the State of California and with BART and LA Metro. Our firm has contributed to hundreds of successful projects over our five decades of business, and we’re pleased that we can also help primes meet their SBE goals.

Our Core Values

  • Provide responsive and reliable consulting services

  • Create and maintain a supportive environment that fosters quality work, learning, and the free exchange of ideas

  • Treat our clients and staff with dignity, fairness, and respect

  • Innovate and share our technical knowledge with our industry and professional colleagues to advance the study and application of acoustical engineering