text: Hi, thanks for your reply.
  Grass might be a summer-only issue, winter months will likely kill it. Sewage smell instead wouldn't definitely be pleasing but it doesn't really mean much, as you can smell the same disgusting thing walking on NY city sidewalks. Are there any road signs saying this is a proper footpath?
  I'm not going to be able to survey the area soon, if you had the chance to, feel free to edit the map
  thanks