If there is asbestos or lead on the premises, there are disclosures that you must give the tenant to execute. Consult a local landlord/tenant quickly because your exposure could be significant if you have not followed the legal requirements.
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You might have a duty to make sure there is no asbestos depending on the type of work you are doing. It would probably require an in person consultation with an attorney in your area.
But why do you want to keep this problem tenant in your unit? Why not let him out now? Do the work you want, and find a new tenant that won't give you trouble. It can't possibly be worth it. Rental properties are in high demand so you probably won't have a problem finding a new tenant.