Air Quality Permitting and Compliance

Yorke Engineering has performed over 4000 air quality projects in the areas listed below, including over 1000 air permits, hundreds of emissions reporting projects, dispersion modeling/HRAs, and all kinds of unique compliance projects. See below for more detail.

Air Permitting – NSR, PSD, and Title V

  • Air Permit Applications (NSR, PSD)
  • Title V Permitting
  • BACT, Modeling, Offsets
  • New, Modified, and Relocated Sources
  • Portable Equipment (PERP)


  • Title V – Semi-Annual, Annual Certs
  • CARB/EPA GHG Reports
  • AB2588 – Inventories & HRAs
  • RECLAIM – Daily, Monthly, Quarterly, Annual
  • SARA TRI, Form R
  • Emission Inventory Plans and Reports
  • Rule specific (R314, R1110.2, etc.)

Auditing / Compliance Assessments

  • Enivronmental Facility Audits
  • Corporate/Management Due Diligence
  • Title V Certifications
  • Mitigation Planning

Mobile Sources

  • CARB Diesel Fleet Compliance; On-Road; Off Road
  • Port related studies and support
  • EMFAC and OFFROAD modeling
  • EIR emission quantification and mitigation strategies
  • Mobile Source Grants – Carl Moyer

Emission Inventories

  • Toxics – Air Toxics Hot Spots, NESHAPS
  • Green House Gas Inventories and Planning
  • Criteria Pollutants – Annual Emissions, Title V Applicability, RECLAIM Applicability

Health Risk Assessments

  • Air Permitting/HRAs
  • Toxics Hot Spots – AB2588 HRAs
  • Modeling –  AERMOD, HARP

Air Modeling

  • EMFAC Urbemis
  • CEQA/NEPA Air Quality Studies
  • Risk Management Planning (Title III)
  • Impact Analysis
  • Odor Modeling

Ambient Air Measurement Systems

  • Ambient Air Particulate Systems
  • Ambient Air VOC & Odor Systems
  • Associated Toxics HRA Calculations

On-Site Facility Compliance Management Assistance

  • Compliance Assessments
  • Rule Applicability/Compliance
  • Compliance System Development
  • Permit Clean-up – Revisions and Corrections
  • Agency Negotiations
  • Daily, Weekly, Monthly, or Quarterly on-site assistance as needed
  • Staff Training
  • Trading Programs (e.g., RECLAIM/GHG)

Data Management Systems Design and Implementation

  • Recordkeeping/Software Systems
  • Compliance/Software Tracking Systems