Founder and Vice Presidents

Dr. Hamid Rastegar

Dr. Hamid Rastegar is one of the original founders and current majority owner of Aspen Environmental Group. He serves as President and Chief Executive Officer. Dr. Rastegar has more than 30 years of broad experience in management of multi-disciplinary projects involving the infrastructure, energy, and petroleum industries. In addition to directing and managing projects, Dr. Rastegar has conducted environmental assessments in the areas of air quality modeling and impact analysis, health risk assessments, liquid petroleum and natural gas pipeline safety analyses, petroleum products supply and demand studies, and permitting.

Read more about Dr. Hamid Rastegar

Jon Davidson

Vice President
Jon Davidson is the Vice President in Aspen’s Agoura Hills office. He is an environmental professional with more than 30 years of experience providing consulting services to government agencies and private clients. Mr. Davidson has served as a project manager for the environmental review of numerous projects, and has also managed several on-call environmental services contracts for government agencies. He has experience working on a range of different types of projects, but with a significant focus on infrastructure and public works projects, including substantial experience with energy and water projects.

Read more about Jon Davidson

Susan Lee

Susan Lee is the Vice President in Aspen’s San Francisco office. She has over 30 years of experience and has been at Aspen for 25 years.

Read more about Susan Lee

Tom Murphy

Tom Murphy is the Vice President in Aspen’s Sacramento office. He has 25 years of experience with project management, environmental planning, impact assessment, and regulatory compliance.

Read more about Tom Murphy