Air Permitting and Regulatory Assistance


When TRC was founded in the 1960s, our original mission was to conduct weather research and provide air quality consulting services. Today we provide a wide variety of air quality services and continue to be an innovative leader in this industry.


TRC is a nationally-recognized leader in the air quality industry and offers our clients comprehensive air quality permitting and compliance augmented by our process and emission control system engineering and design, dispersion modeling, emission testing, and ambient air monitoring services. TRC also provides auditing, reporting, due diligence review for asset acquisitions, and expert witness and litigation support services. As a result of serving a wide range of industries (power generation, oil and gas, petrochemical, chemical and pharmaceutical, forest products, mining, primary and secondary metals, general manufacturing and other industry) and continually staying at the forefront of regulatory developments, we can handle large and complex projects and save our clients time and money. With offices across the country, TRC has long standing relationships with State regulators and can offer a unique combination of local and national expertise.

The Clean Air Act (CAA) and subsequent amendments and regulations promulgated by the EPA provide the basic framework to protect human health and the environment by addressing our country’s most pressing air quality issues. These federal laws and regulations, supplemented with state and local regulations, change regularly and rapidly as the US finds its balance between economy and environment. Each of these regulatory requirements must be taken into account in the overall air permitting and regulatory compliance strategy for a facility. TRC maintains the technical expertise, experience, innovative personnel, and in-depth regulatory knowledge needed to tackle the complex issues raised by the CAA Amendments.

TRC’s staff performs air quality services incorporating all technical aspects of facility permitting, regulatory compliance, enforcement support and measurements related to the federal regulations listed below:

  • National Ambient Air Quality Standards (NAAQS)
  • Prevention of Significant Deterioration (PSD/NSR), Non-Attainment New Source Review (NNSR)
  • Visibility Protection/Regional Haze
  • Standards of Performance for New Stationary Sources (NSPS)
  • National Emission Standards for Hazardous Air Pollutants (NESHAP/MACT)
  • Power Plant regulations (MATS, NSPS and ESPS/Clean Power Plan)
  • Compliance Assurance Monitoring (CAM)

  • Chemical Accident Prevention Provisions/Risk Management Program (RMP)
  • State and Federal Operating Permits
  • Acid Rain Program
  • Protection of Stratospheric Ozone
  • Mandatory Greenhouse Gas Reporting
  • Emergency Planning and Community Right-to-Know Act (EPCRA), Sections 301-303, 304, 311-312, and Section 313 TRI Form R