Air Compliance Consultants, founded in 1987, provides air quality, industrial hygiene and environmental compliance services to a variety of industrial and governmental clients throughout the United States. It specializes in providing emission control equipment assessments, stack testing, continuous emissions monitoring systems consulting and testing and National Emission Standards for Hazardous Air Pollutants compliance assistance. The company also offers indoor and ambient air sampling, odor dispersion modeling, regulatory assessments and environmental management. The company has more than 25 employees and is based in Pittsburgh.