FCC Compliance Assessments/Surveys are required of the telecommunication providers to ensure their antenna/base station sites (ground level & roof top) do not pose a health risk and are within FCC guidelines based upon OET bulletin 65. The FCC guidelines for MPE (Maximum Permissible Exposure) for general population uncontrolled environment is based upon a (30-minute Time Averaging) and for Occupational controlled environment is based upon a (6-minute Time Averaging). OSHA https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.97 also recognizes these limits as state-of-the-art scientific consensus standards. If these limits are exceeded AES will help set up a RF safety plan: Our reports will also address concerns of lower level, long term non-thermal levels below FCC Limits (pre-cautionary) which is not a formal set standard. Note: Roof top antenna sites usually pose a higher exposure risk due to people accessing the roof and the proximity of antennas. Property management that lease their buildings out to the telecommunication companies also are responsible to ensure their rooftop cell site is in FCC compliance for human exposure for contrators or anyone else accessing the roof.
Updated Radio Frequency Exposure Rules Become Effective on May 3– Updated Radio Frequency Exposure Rules Become Effective on May 3 (arrl.org)