• Specialty

  Noise / Vibration
  

• SECTOR

  Energy / Power
  

• TYPE

  Environmental Study
  Engineering, Design & Startup
  

• CLIENTELE

  Private Sector
  

• TIMESPAN

  2007-2008

• LOCATION

  Dayville, CT

Lake Road Generating Station

SERVICE:

Noise Study for Expansion & Mitigation of Jet Hoggers

DESCRIPTION:

A noise study was required to support the permitting of a combined-cycle turbine unit at the existing Lake Road Generating Facility in Dayville, Connecticut owned by BG Energy.

This project was complicated by the current facility sound output which was adversely impacting the surrounding neighborhood.  In addition to the noise study, the facility required the analysis and acoustic mitigation of steam jet hogger noise from existing power units that was significantly impacting the surrounding neighborhood.

The noise assessment for the expansion included establishing existing sound levels in areas near the site, acoustically modeling future conditions with the Project in operation, and comparing the operational sounds to the limits for residential areas and other land uses to acceptable levels in the Connecticut DEP Noise Regulation.  Acoustic modeling of future sound levels for the expanded Lake Road Generating Station met the DEP Noise Regulation limits at all residential locations with some noise mitigation including silencers, an acoustical building, and the use of a low-noise air cooled condenser. 

Tech also conducted a noise impact and mitigation analysis for the existing steam jet hogger.  Through a combination of sound level monitoring and acoustic modeling, adverse noise impacts from the steam jet hogger vents were narrowed to two residential locations.  Five mitigation measures were developed for  BG Energy that addressed the noise concerns.

 

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Key Points

• A combined-cycle turbine unit was having neighborhood noise issues and wanted to expand.
• Tech Environmental analyzed the noise impacts of the existing concerns, developed mitigation, and confirmed compliance for future operating conditions with the mitigation measures and the expansion.