6. Noise Impact Summary – From Environment to Site
There are several commercial and apartment buildings near the site. JJAE has identified several potential stationary noise sources including:
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Make-Up Air Units
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Air Handling Units
A summary of the noise sources used in our modelling is provided in Attachment D.
JJAE modelled the noise impact from all significant noise sources to the Site. The results are summarized in the table below and illustrated on Figure 1.
Facade | Worst Case Daytime Sound Level (dBA) | DaytimeSite-Specific NoiseLimit (dBA) | Worst Case Nighttime Sound Level(dBA) | Nighttime Site-Specific NoiseLimit (dBA) | Limits met |
---|---|---|---|---|---|
North | 49 | 58 | 49 | 52 | Yes |
East | <40 | 58 | <40 | 52 | Yes |
South | 48 | 58 | 48 | 52 | Yes |
West | 49 | 58 | 49 | 52 | Yes |
Ground OLA | 48 | 58 | 48 | 52 | Yes |
The on-site noise impact predictions are below the site-specific noise limits.
7. Recommendations
The road traffic noise impacts were above the NPC 300 requirements. Noise mitigation measures including requirements for air conditioning, noise warning clauses and special building components. These have been summarized in Attachment B under Table B1.
The stationary noise impacts from to the site were evaluated and the sound level predictions were determined to be below the site-specific noise limits.
The stationary noise impact from the site to the neighboring buildings was not evaluated as no information was available at the time of this report. JJAE recommends that once a mechanical design is available a review of the mechanical systems must be evaluated with an addendum to this report.