tl;dr: if it's too loud there, they're contractually obligated to deal with it... but it won't be.
From a noise perspective this is similar to 2013 when the braided ramp on northbound Deerfoot was built pretty much in the bedroom window of some houses in Auburn Bay. Different obviously in the sense that those people were already backing onto Deerfoot and not an endless greenspace, but similar in terms of the attenuation required. Deerfoot Trail through there carries more than twice the volume that I expect Stoney SW to carry on opening day.
The northbound Stoney mainline is gonna be far enough away that it won't be an issue, and then the median is literal football fields wide which attenuates southbound.
Noise won't end up being an issue here, just the eyesore of the MSE wall for which she has no recourse. My civil tech buddy from school worked somewhere on this project and I texted him to see if he knows anything but the way these megaprojects are setup it's probably 5 people I'll have to go through to hear anything useful.
Relevant text
Quote:
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The Contractor shall ensure that the maximum noise level of 65 dBA Leq24 (A-weighted 24 hour equivalent sound level) measured 2 metres inside the affected residential property line is adhered to. If the threshold is exceeded, the Contractor shall implement noise mitigation measures. Monitoring and measurement to determine where and when noise mitigation measures are required shall be generally completed in accordance with Section 400.4.9 (Road Traffic Noise Mitigation (New Infrastructure Only)). The mitigation of noise issues could include constructing noise walls or berms. The mitigation must be broadly supported by the affected residents. If noise mitigation is required the minimum height implemented shall be 1.8 m.
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[Source sec 200.2.14, pdf page 162]