Compliance. Solved.


cems-comsContinuous Emission Monitoring Systems (CEMS)
Continuous Opacity Monitoring Systems (COMS)

Air Quality Services has over 75 years of collective dedicated experience in providing CEMS and COMS services to industrial facilities and electric utilities. We offer a full spectrum of CEMS/COMS services to meet our clients specific requirements. AQS' experts currently have full operational and maintenance responsibility for CEMS/COMS systems at four electric utility facilities and have demonstrated valid data recovery in excess of 99%. AQS also provides ongoing CEMS/COMS support to numerous industrial facilities in accordance with monitoring specifications in various NESHAPS, NSPS, MACT/BACT requirements, SIP Calls and the Acid Rain requirements. These services include:

  • Full-spectrum Operations and Maintenance
  • Report Preparation – Regulatory and Internal (including EDRs)
  • Liaison – Client / Regulatory Agencies
  • System Assessment
  • Development of Monitoring Plans
  • Certification Application & Regulatory Liaison
  • Development of QA / QC Programs
  • Linearity Tests/Cylinder Gas Audits (CGA's)
  • Particulate Monitor RCA's and RRA's
  • 24/7 Phone Support / Emergency Maintenance Visits
  • Functionality Checks & Initial Calibrations
  • Initial Certification Tests
  • Relative Accuracy Test Audits (RATA's)

Since we are not tied to any specific manufacturer, we can be objective in our evaluation of equipment and vendor support elements. Our systems utilize proven components configured to provide reporting data (as found in 40 CFR Part 60, Part 63, and/or Part 75), as well as provide meaningful process control information.

Corporate Headquarters:

10441 Hedden Road
Evansville, Indiana
(812) 452-4785