See here,
http://www.calgary.ca/UEP/Water/Docu...0Flowchart.pdf
At the bottom, item 1. Now it doesn't sound like a 100% requirement. You could check with the city and see if they got their "As Consturcted Grade Certificate" discussed on page 2. I'm not sure the requirement for them to do that though? I checked on drainage when I built my garage and the city said they didn't care at all about the details, as long as I followed this guide:
http://www.calgary.ca/UEP/Water/Docu...w_brochure.pdf
and that their was no inspection for it.