HHS-OASH-2026-0397-4720 https://www.regulations.gov/comment/HHS-OASH-2026-0397-4720 I live in The Arena District in downtown Columbus, and there are all kinds of radiofrequency admitting antennas on the tops of buildings in the downtown. The exposure level outside on my 6th floor balcony is Extreme. The exposure level inside my condominium unit appears to be much lower, so it appears the construction materials of the building may be somewhat protective. I believe the building meets commercial construction standards. According to AntennaSearch Report, there are 41 Towers within 1.0 miles of 43215. The nearest tower is .24 miles away. Since I am inside most of the time, I have learned that the following things were increasing my RF exposure to either a High or Extreme level inside most areas of the condominium including radiofrequencies from the next-door neighbor's Wi-Fi and possibly other sources of RF coming through a shared wall into my bedroom. Also, the following items were being used in the condominium which contributed significantly to my exposure: -ROKU -Wi-Fi -a printer -a smart refrigerator -Alexa -a laptop computer and printer These measurements were confirmed by a Home EMF Assessment Report completed by Shielded Healing LLC. on 9/10/2020. Diana Pollock B.A. Environmental Biology M.C.R.P. City and Regional Planning.