Comments: Thank you all for your professional assistance in the remedial work done to prevent radon levels from being higher than they should be. In fact they are now well below the safe level!! We are very pleased with the service, the attention to detail, and willingness to answer all questions. The basement, home living area and attic space were all left clean and tidy. I am also pleased that the fan in the attic is so very quiet! I will certainly recommend you to anyone who might be selling or buying a home, and will call you again if the need arises. Thank you again for a job well done.