Back in October when the Occupy Ottawa protest was still well-established in Confederation Park, I went by a couple of times to see what there was to see. Someone with a generator, bucket, and various tools was at the NCC's miniature bronze map of downtown Ottawa-Gatineau. The more tourist-oriented streets appear to be brass, and this person was cleaning them with a Dremel and various abrasive sponges.
I didn't realize she wasn't with the protesters, as a gasoline generator and water jugs was the kind of thing the protesters would have with them. But it turns out she works for the firm of the original artist, which was hired by the NCC to do some cleaning and updating some features on the map (like adding the new Convention Centre and removing the Capital Infocentre).
I chatted with her briefly, but unfortunately it's been too long for me to remember any noteworthy details.
Click on the photos to view full-size. I think it's a neat throwback to the scale models used by Jacques Gréber to illustrate his plans for the capital (Such as #151 and others listed here)