I'll ask the 79 year old resident to raise the concrete slab and level the ground

I believe the Sidewalk is a responsibility of the homeowner. Now, this may seem unfair (from glenn davis's comment) but if the homeowner is unable to keep up with their property, or pay someone else to, they must look for other solutions.

Has the dpw been contacted? (Im sorry to give my opinion that even if they were, they probably couldnt spare the labor to repair an issue they caused 30 years ago, especially with it being not in the list of responsibilities) I ask this, because I am interested in what their take on it has been to this point.

If in the end you are still having a problem finding someone to do it, i recommend looking for volunteers on here in a new post, or maybe on craigslist.

Good luck with your sidewalk.

Can we close this issue?

please close this issue as I will take care of this myself.

@ Glen:
thanks
What will be done and when?
But it does seem that there are tons of problems like this all over the city... not something the city should fail to recognize and lead and coordinate an effort so that the costs aren't horrendous.
Indeed, when a problem is endemic in the city, it is quite essential that the city take action.

To those interested: I put the problem up for posting as a favor to the homeowner not to get wet noodled. We will fix it in timely manner, just like the City does. I posted a sewer problem as a favor to homeowner and got pooh-poohed along(pardon the pun) until a law suit was going to be filed and low and behold the dpw took action.(thank goodness they did). Please close this issue. I have.