See the latest EHS federal and state regulatory updates due to COVID-19

Emissions Monitoring Support

Trinity Air Quality: Emissions Monitoring Support

Trinity Consultants assists facilities with air quality permitting and compliance including Continuous Emissions Monitoring Systems (CEMS) related services. Trinity's experienced professionals have the expertise to help you ensure a CEMS program that meets your legal obligations and streamlines associated processes. When you work with Trinity for Emissions Monitoring Support, you can expect the following:

  • CEMS program audits
  • Customized training
  • Development or review of existing Parts 60 and 75 Quality Assurance Plans (QAP)
  • Associated permitting
  • Assistance in creating or updating facility maintenance programs
  • Best practice recommendations to ensure maximum CEMS data availability and the safe, efficient use of facility resources
  • Quarterly electronic data reports (EDR ) and semi-annual reporting assistance
  • CEMS equipment selection and operational assessment

What is Emissions Monitoring?

There are two types of emissions monitoring. Though there are two different approaches, there is some overlap.

  1. Continuous Emission Monitoring System (CEMS) - Some facilities require specialized analytical equipment that measures the concentrations and/or emission rates of one or more smokestack pollutants. When a CEMS is present, it is almost always because it is required by the facility's air permit, and the CEMS data is generally used to determine both emission limit compliance and stack output performance. All CEMS data is subject to the review of your regulatory agency and can trigger enforcement action where applicable. Although there are certain costs and difficulties associated with these types of systems, they are installed for the purposes of pollutant measurement and additional quantification for state and federal emissions reporting.
  2. Periodic Stack Testing - Occasionally, facilities contract with a specialized testing firm to come to the facility and take similar measurements on more of a snap-shot basis, usually for just a few hours. Some of the measurement methods are almost identical to the CEMS equipment, providing instant results on a minute-by-minute basis; other methods provide one number for an hour or two of sampling. For many methods, samples must be sent to a lab for analysis and results are received weeks later. Stack testing can be done on an unofficial basis (an “engineering test”) or an official basis, the point of which is to determine if the facility is meeting its emission limits. At that point, it is a compliance test, and it is performed under the oversight of the regulator.

Who Needs Emissions Monitoring Support?

If you are an owner or operator of a facility that needs one of the following, Trinity Consultants can help.

  • CEMS auditing & compliance
  • Ensuring quality control
  • CEMS operational training
  • CEMS certification and QA/QC plan development
  • Facilitating reporting
  • CEMS installation project planning and oversight

Contact Trinity Today

Whatever your CEMS-related challenges may be, Trinity can partner with you to ensure an appropriate, stream-lined program that meets your regulatory compliance obligations. For assistance, contact Steve Argabright at 972-661-8100 or