Polk City Radon Inspection – Radon Authority, 5668 Fishhawk Crossing Blvd #303, Lithia, FL 33547 – (813) 737-7537 Polk City Radon Inspection | Radon Authority | 5668 Fishhawk Crossing Blvd #303, Lithia, FL 33547 | (813) 737-7537