Services / Air Quality / Health Risk Assessments

Health Risk Assessments

Health risk assessments (HRAs) are generally characterized as a method of estimating a person’s or population’s chances of experiencing cancer or other adverse health effects due to exposure to toxic air contaminants (TACs). HRAs can vary in complexity depending on issues such as site specific factors, the purpose of each HRA, and the regulatory requirements.

Yorke Engineering, LLC’s (Yorke’s) environmental engineering staff is highly skilled at utilizing the most current risk assessment tools and methodologies. Our professional staff can expertly design and prepare HRA projects to address specific objectives, whether the challenges are complex or simple.

HRA Services

  • AB 2588 Facility-Wide HRAs
  • Air Quality Permitting-Based HRAs
  • Air District Rule-Based HRAs
  • CEQA-Based HRAs
  • HRAs for “In-House” Engineering or Project-Specific Evaluations

HRA Tool Proficiencies

  • Hotspots Analysis and Reporting Program, Version 2 (HARP2)
  • Air District-Specific Health Risk Calculators
  • Screening-Level Air Dispersion Models (e.g., AERSCREEN)
  • Refined Air Dispersion Models (e.g., AERMOD)

Agency-Specific Expertise

  • California Air Resources Board (CARB)
  • Office of Environmental Health Hazard Assessment (OEHHA)
  • South Coast Air Quality Management District (SCAQMD)
  • San Joaquin Valley Air Pollution Control District (SJVAPCD)
  • Bay Area Air Quality Management District (BAAQMD)