Picking up Butts in Montreal

I live in an independent city on the island of Montreal called Westmount. It is relatively clean although certainly not without its litter. However, I noticed that there was a cigarette butt accumulation just outside of a cafe located in our arena which is at the south side of Westmount Park. On the way there (less than a 3 min walk), I only found 3 butts, all one by one. But once outside the cafe, I found 199. These 202 were picked up in a span of 20 minutes. It's interesting to note that the arena and cafe are certified LEED silver for innovation. The cafe itself is furnished with re-used items. 

I then walked 10 more minutes into the next neighbourhood (Nôtre-Dame-de-Grâce) where I only found 8 more butts, 2 at the park exit and 6 along the street. 

General observations are that these areas are relatively clean but not without high concentration areas.