How to drill 6-8" hole in reinforced concrete?
 

I think I might've posted about my problems with my septic tank before. I just spent 3 weekends digging out a magnolia tree that someone planted on top of the septic tank in the home we just bought. It was a ton of work. I didn't think i'd ever see the septic tanks.

I've dug it out and can see the lids of both tanks but they're at least 4 inches of reinforced concrete that has to be lifted off. I want to make an access hole in both lids so that I don't have to dig this thing up again.

Is there a masonry tool that I can rent to do this? Does it have any problems cutting through the rebar? Is it difficult to operate?

Thanks.

Call someone that does core drilling.

When was the last time it was cleaned out?