Heidi Rous, CPP
Director of Air Quality, Climate & Acoustics Services

Ms. Rous is the Officer-in-Charge of ESA PCR’s Pasadena Office and a Certified Permitting Professional. She has provided technical oversight for projects throughout Southern California and the United States for more than 25 years.  An expert in managing complex compliance and planning projects, she has cultivated and maintained long-term relationships with Fortune 500 companies and regulatory agencies.


  • Secretary of the Technical Coordinating Committee of Risk Assessment / Management for the Air & Waste Management Association
  • Regular presenter of technical papers at national conferences and workshops
  • Leads a division that is on the cutting-edge of carbon assessment and sustainable planning practices
  • A recognized authority in air quality permitting, sustainability, emissions estimation and reporting, environmental audits, litigation support, and environmental management systems