4. Stationary Noise Impact Analysis

4.1 Stationary Noise Impact Sound Level Criteria

The general criteria for stationary noise sources are defined by NPC 300. The criteria defined in Table C-5 and C-6, "Exclusion Limit Values of One-Hour Equivalent Sound Level (Leq, dBA) Outdoor Points of Reception" and "Exclusion Limit Values of One-Hour Equivalent Sound Level (Leq, dBA) Plane of Window of Noise Sensitive Spaces" are used to evaluate the noise impact at the proposed development.

The criteria for a Class 1 area have been summarized below:

Receiver Category	Time Period	Stationary Noise Criteria
Outdoor Living Area (OLA)	Day = 7:00 to 23:00	Leq = 50 dBA
Plane of Window (POW)	Day = 7:00 to 23:00	Leq = 50 dBA
	Night = 23:00 to 7:00	Leq = 45 dBA

The area has elevated traffic noise levels as seen in Section 3 of this report. To account for this JJAE has used site-specific stationary noise criteria which match the lowest traffic noise levels on any façade.

Receiver Category	Time Period	Site-Specific Stationary Noise Criteria
Outdoor Living Area (OLA)	Day = 7:00 to 23:00	Leq = 50 dBA
Plane of Window (POW)	Day = 7:00 to 23:00	Leq = 58 dBA
	Night = 23:00 to 7:00	Leq = 52 dBA

4.2 Modelling Methodology

The stationary noise impact was evaluated using the CADNA A acoustic modelling software that is based on the ISO 9613-2 standard. The data for all potential stationary noise sources was summarized in Attachment D.

5. Noise Impact Summary – From Site

The noise from the Site to the neighboring buildings could not be accounted for because the site has not undergone mechanical design yet. However, with the elevated traffic noise levels and the minimal noise impacts from the surrounding buildings, JJAE believes that the noise impacts from the Site will not be environmentally significant. JJAE strongly recommends having an addendum to this report completed once a mechanical design is done to account for noise from the Site to the neighboring building.