• Specialty:

  Air Quality
  

• Location:

  Commercial
  

• Type:

  Permitting / Compliance
  

• Timespan:

  2009

• Location:

  Chestnut Hill, MA

Boston College Emergency Generator

SERVICE:

Air Dispersion Modeling Analysis

DESCRIPTION:

Boston College proposed to install a 300 kW emergency generator on its campus. The stack would be lower than 1.5 times the height of the nearest building; therefore, air quality modeling was performed to document that Massachusetts and National Ambient Air Quality Standards (NAAQS) were not exceeded. 

Tech conducted a screening air quality impact analysis, using a stack height of 19 feet above ground level. The modeled stack height was approximately 10 feet above the roof of the generator enclosure, but below the chapel building roof height of 55.5 feet.  The stack was designed to be vertical and would not include any devices that would restrict the vertical exhaust flow. The analysis showed that operation of the generator at either of the proposed locations will fully comply with the NAAQS for all pollutants and averaging periods.

 

Key Points

• Boston College retained Tech to perform a stack height optimization study for a proposed emergency generator.
• Tech conducted a screening air quality impact analysis that showed that operation of the generator at either of the proposed locations fully complied with the NAAQS for all pollutants and averaging periods.