What to do after an inspection

[Account Closed]

Hello,

I am buying my first property. Today I got back the inspection and the radon came back high.  I found the property on Craigslist and used my real estate attorney to draft the purchase agreement, which we have both signed. 

Where do I go from here? Can I ask for concessions or are we past that point? If I can, do I have my lawyer re write the agreement? Any help would be greatly appreciated. 

Thank you!