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6-8 Noise

Please explain in detail how the adjacent gas compression station noise levels will impact the noise levels of the power plant (what will the projected combined noise levels be)?

RESPONSE 6-8

 

Noise levels for the Burrillville Compressor Station (“BCS”) are estimated to range from 43 to about 51 dBA depending on load conditions at BCS.  The maximum noise level produced by CREC will not exceed 43 dBA at this same location.  As such, CREC’s maximum noise level (43 dBA) is 8 decibels lower than BCS’s maximum noise level (51 dBA).  With Clear River Energy Center (“CREC”) operating at maximum load (43 dBA) and BCS operating at maximum load (51 dBA), the combined noise level will be 52 dBA or 1 decibel higher than without CREC operating.   A one decibel increase is barely perceptible under laboratory conditions.  With CREC operating at maximum load (43 dBA) and BCS operating at low loads (43 dBA), the combined noise level will be 46 dBA or 3 decibels higher than without CREC.  This evaluation is for the residences along the Wallum Lake Road.

 

RESPONDENT:

 

Mike Theriault, Michael Theriault Acoustics, Inc.

 

DATE:

May 11, 2016