Continuous Emission Monitoring Systems (CEMS)
          Continuous Opacity Monitoring Systems (COMS) 

Air Quality Services has over 50 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.

The number of facilities that must install and operate monitors continues to increase.  AQS provides CEMS and COMS services in accordance with monitoring specifications in the NOX SIP Call, the Section 126 petition, New Source Performance Standards, and the Acid Rain requirements.

Our experience and capabilities include:

• CEMS Integration
  • System design
  • Procurement of all necessary equipment (monitors, probes, umbilicals, shelters, etc.)
  • Construction of instrument racks (wiring, "as-built" drawings, etc.)
  • Installation, setup, "initial certification" tests, calibrations, etc.
• Development of monitoring plans and QA / QC programs
• Day-to-day requirements (we have consistently provided a valid data recovery rate of greater than 97% for each quarter, over more than 10 years of operations)
  • Routine Operations 
  • Routine Maintenance
  • Routine Recordkeeping
  • Report Preparation
  • Routine Reports to Client
• Relative Accuracy Tests and Relative Accuracy Test Audits (RATA)
• Liaison between client and regulatory agencies
• Linearity Tests/Cylinder Gas Audits (CGA)
• Neutral Density Filter Audits

Parameters Monitored: Air Quality Services has extensive experience in operating and maintaining CEMS/COMS Systems for coal-fired power plants and industrial boilers, monitoring for SO2, NOX, CO2, and flow.