My partner called me at work yesterday morning to tell me that the there was a bulldozer in my backyard.  I immediately came home and low and behold, a bulldozer digging up my yard!  I asked the workers what the heck was going on and they said there a collapsed sewer line and they needed to dig a huge hole to fix it.  They didn't even contact me to tell me this was going to be happening they just came onto my property, took apart a walkway (later rebuilt), dug a hole and left a pile of hay and grass seed.  Would have been nice to be informed by the city...geez. 

Just thought I'd warn everyone!