• Specialty:

    Air Quality
    Noise / Vibration
  • Location:

  • Type:

    Environmental Study
    Permitting / Compliance
  • Timespan:

  • Location:

    Burlington, MA

Project Number:


Verizon Emergency Generators


Air and Noise Permitting


Tech was asked to perform sound monitoring and air dispersion modeling for the proposed Verizon emergency generators in Burlington, MA. Verizon wanted to install two 1.5 MW emergency generators and a dry cooler to replace four generators that were currently installed at the Verizon facility. Tech performed background sound monitoring at two property boundary locations to determine compliance with the MassDEP Noise Policy. Tech performed sound modeling, and was able to demonstrate future sound levels, at the closest nearby receptors, from the proposed generators and other equipment. From the modeling, Tech concluded that the emergency generators and other equipment would comply with the MassDEP noise policy and would not create a nuisance, nor would any pure tones be created. In performing the air dispersion modeling, Tech's goal was to determine the proposed 10-foot stack height above each enclosure would not cause an exceedance of the National Ambient Air Quality Standards (NAAQS) and therefore would be in compliance with the MassDEP Noise Regulations. Tech implemented the use of the EPA approved AERMOD model and guidance from the EPA to generate the appropriate model for the air dispersion. Tech found that the proposed 10-foot stack would comply with the MassDEP regulations and would not cause an exceedance of the NAAQS.

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Key Points

  • Tech performed air dispersion modeling and sound monitoring to determine if two proposed emergency generators would be in compliance with the NAAQS, MassDEP regulations, and the MassDEP Noise Policy.
  • Through modeling and onsite monitoring, Tech was able to conclude the noise and air quality generated by the generators/ other mechanical equipment would comply with all appropriate regulations.