DerbyDad03 posted for all of us...

Seems like this needs some serious code-related advice from the local
authorities. Fumes, liquids, structure, insurance, weather, what else?

This is more than just a "fixing a hole", this is a full fledged
engineering project.


Fumes are a valid concern! I think this is beyond the scope of the OP and
requires an on site engineering design/review.

This sounds like what happens in the Philly area when the "low bidder/buddy"
gets the job to demolish or repair a structure by untrained or unknowledgeable
people. He may or may not be judgment proof because of lack of funds but does
this excuse one morally?

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Tekkie Don't bother to thank me, I do this as a public service.