skip navigation
New Hampshire Department of Environmental Services

Air Emissions Monitoring for Stationary Sources
Compliance monitoring of a stationary source can be accomplished on either a continuous or an intermittent basis. Some stationary sources use a continuous emission monitoring (CEM) system which is permanently installed on a stack or process ductwork to measure the emissions of one or more pollutants. The emissions data is recorded, averaged and stored by a computer data acquisition system (DAS). Instead of, or in addition to, the CEM system measurements, a source may conduct a one-time or periodic compliance emissions test to measure the magnitude of one or more of its emissions. A test typically consists of three discrete measurement runs, each run lasting one or more hours depending on the test method and pollutant concentration(s). more …

green arrow Hot Topics

green arrow Rules/Regulatory

green arrow Technical Assistance

green arrow Training

  • EPA Method 9 certification and re-certification (i.e. Smoke School) is held in New Hampshire each year in approximately late April/early May and late September/early October. Specific dates and times, locations and details of the next scheduled training will be included on the NHDES Calendar of Events as more information is known.

green arrow Forms/Applications

green arrow Related Programs

green arrow Resources/Links

green arrow Contact Us

  • Raymond Walters
    Program Manager
    Compliance Measurement and Data Programs
    NHDES Air Resources Division
    29 Hazen Drive; PO Box 95
    Concord, NH 03302-0095
    (603) 271-6288
    (603) 271-1381 (fax)
  • Michael O’Brien
    Section Supervisor
    Testing and Monitoring Section
    NHDES Air Resources Division
    29 Hazen Drive; PO Box 95
    Concord, NH 03302-0095
    (603) 271-6546
    (603) 271-1381 (fax)



Adobe Acrobat Reader Symbol Adobe Acrobat Reader format. Download a free reader from Adobe.

Microsoft Word SymbolMicrosoft Word format: free viewer instructions from Microsoft.

NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

copyright 2017. State of New Hampshire