About Us

Paul R. Donavan, Sc.D., Principal

Dr. Donavan began his professional career in acoustics in 1976. At General Motors from 1979 to 2001, Dr. Donavan led … Continue reading →

James A. Reyff, Principal

Mr. Reyff began his environmental studies career in 1989 as a meteorologist. He joined our firm in 1995 as an … Continue reading →

Fred M. Svinth, Associate AIA, Principal

Mr. Svinth has been consulting in the U.S. and internationally on various aspects of acoustics and vibration and has worked … Continue reading →

Michael S. Thill, Principal

Mr. Thill began his professional career in environmental acoustics in 1999. His expertise lies in field research, data analysis, and … Continue reading →

Heather Bruce, Senior Consultant

Ms. Bruce has 10 years of experience with noise analyses, transportation planning, and traffic forecasting/analyses. Since 2011, she has been … Continue reading →

Carrie J. Janello, Senior Consultant

Ms. Janello has extensive educational and practical experience in Digital Signal Processing (DSP), Acoustics, Systems Dynamics, and Automotive Noise, Vibrational, … Continue reading →

Jay Witt, P.E., Senior Consultant

Mr. Witt joined I&R in March 2020. He began his career as an Air Quality Engineer with the Idaho Department … Continue reading →

Casey Divine, Consultant

Mrs. Divine started with Illingworth & Rodkin, Inc. in 2013. As an environmental consultant with expertise in air quality and … Continue reading →

Adwait Ambaskar, Consultant

Adwait Ambaskar (Acoustics) joined I&R in 2021 after graduating from Penn State University with a Masters in Acoustics. While at … Continue reading →

Zachary Palm, Consultant

Mr. Palm joined Illingworth & Rodkin, Inc in 2021. He is a meteorologist that performs air quality and greenhouse gas … Continue reading →

Jordyn Bauer, Staff Consultant

Ms. Bauer started with Illingworth & Rodkin, Inc. in 2022 as an intern. She continued her work there as a … Continue reading →

Micah Black, Staff Consultant

Mr. Black joined I&R in August 2018, bringing his knowledge of field research methods, Geographic Information System (GIS) mapping experience, … Continue reading →

Angela Machado, Director of Administration

Angela Machado started with Illingworth & Rodkin in 2015, bringing her extensive management experience to the team. With over 35 … Continue reading →

Richard R. Illingworth, P.E., Co-Founder (Retired)

Mr. Illingworth began his professional career in 1969 as a Civil Engineer with Caltrans. During his years at Caltrans, he … Continue reading →

Richard B. Rodkin, P.E., Co-Founder (Retired)

Mr. Rodkin began his career as an acoustical consultant in 1973. Since that time, he has been responsible for a … Continue reading →