This link is for the PA Citizen Guide to Radon http://www.depgreenport.state.pa.us/elibrary/GetDocument?docId=3983&DocName=PENNSYLVANIA%20CITIZEN%26%2339%3BS%20GUIDE%20TO%20RADON.PDF%20%20%3Cspan%20style%3D%22color:green%3B%22%3E%3C/span%3E%20%3Cspan%20style%3D%22color:blue%3B%22%3E%28NEW%29%3C/span%3E%2010/9/2021