With respect to the West Village and CalgaryNEXT, one of the key elements was to find out the costs to remediate the contamination. Not sure if this has been posted before - but the CMLC report has now come out on it. Here's the exec summary:
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Expedited approach: $140 Million, 6-8 years
Measured approach: $85 Million, 8-10 years
The expedited approach is represented by excavation and disposal of all impacted areas, where as the measured approach is represented by excavation and on-site biostabilization and reuse.
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Here's the link to the full report:
http://www.calgarymlc.ca/westvillage