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Air Quality Consulting

Yorke Engineering, LLC is the trusted leader in air quality consulting services. As one of the top air quality consulting companies in California, we specialize in helping industrial, commercial, and government clients solve complex air quality challenges—from permitting and compliance to emissions reporting and risk assessments.

Our team of seasoned air quality consultants has completed thousands of successful projects across the State. We bring deep regulatory knowledge, technical expertise, and a client-first approach to every engagement.

Whether you need to secure a permit, respond to agency requests, reduce emissions, or simply understand your obligations, Yorke Engineering delivers solutions that work.

Air Quality Consulting Services

As expert air consultants, we offer comprehensive services tailored to your specific facility, operations, and regulatory landscape:

• Air Quality Permitting and Compliance
  Comprehensive support with permit applications, modifications, renewals, and agency negotiations at local, State, and federal levels.
• Emission Inventories and Reporting
  Preparation of accurate air emission inventories and reporting to meet South Coast AQMD, BAAQMD, SDAPCD, CAPCOA, and CARB requirements, including AB 617 and AB 2588 (also known as the Air Toxics Hot Spots Information and Assessment Act).
• Air Quality and Health Risk Assessments (HRAs)
  Air quality assessments and HRAs to support permitting, CEQA evaluations, and AB 2588 air toxics compliance—using OEHHA and air district guidance.
• Air Dispersion Modeling
  AERMOD and HARP modeling to evaluate facility impacts and support permitting, siting, and regulatory decision-making.
• Source Testing and Monitoring Support
  Assistance with test planning, agency coordination, and interpreting results to meet BACT, RACT, and NSPS requirements.
• Title V and RECLAIM/Cap-and-Trade Program Support
  Full compliance assistance, including applicability analyses, Title V permitting and reporting, RECLAIM program support, and compliance with complex air regulatory programs.
• Greenhouse Gas (GHG) Reporting and Compliance
  Support for GHG emissions reporting, verification, inventories, and Cap-and-Trade program compliance under federal and state regulations, including CARB, U.S. EPA, Oregon DEQ, and Washington State requirements.
• Rule Applicability and Compliance Strategy
  Clear guidance on how evolving regulations affect your facility—and what actions are needed to maintain compliance.

To view the full range of air quality services we offer, see our Air Quality Services page.

Why Choose Yorke Engineering?

• California Air Consultants
  With deep roots in California and unmatched knowledge of its regulatory environment, Yorke Engineering sets the standard for air quality consulting companies.
• Agency Relationships
  Our team has strong working relationships with regulatory agencies such as California air districts, CARB, and USEPA, which helps streamline approvals and reduce delays.
• We Know the Rules Inside and Out
  Our team of air quality consultants and compliance experts have decades of experience interpreting and complying with local, State, and federal air regulations.
• Cost-Effective Solutions
  We prioritize practical, tailored strategies that minimize both environmental and financial impact.
• Full-Service Environmental Support
  Air quality compliance is just one part of your EH&S program. We seamlessly integrate with our in-house experts in hazardous waste & materials, water, safety, and more.

Industries We Serve

Yorke Engineering supports a wide range of industries with comprehensive air quality consulting services, including:

Whether you’re a major source, a small business, or a public agency, Yorke can tailor a solution to meet your needs.

Let’s Talk About Your Air Quality Needs

Looking for a qualified, experienced California air quality consultant to support your facility? Yorke Engineering is here to help—from initial permitting through ongoing compliance.