Yes. Federal safety regulations enforced by the Federal Communications Commission govern both radiation frequency exposure limits (47 CFR §1.1310) and effective radiated power limits (47 CFR §22.913).
Radiation frequency exposure limits measure the specific absorption rate (SAR) in human tissue resulting from the operation of a radio signal at a given frequency for a particular duration. These rules also define how to measure the SAR for a particular antenna.
Effective radiated power (ERP) limits directly limit the power emitted from radio antennas operated for cellular services. It is important to note that these regulations describe both a base ERP limit and an elevated ERP limit for which an operator can qualify depending on the environment where the antenna is located. These rules also define how to measure the ERP for a particular antenna.
Under Federal law, routine environmental evaluation for RF exposure is required for transmitters, facilities or operations that are included in certain categories of facilities. These categories include equipment used for cellular communication when the facility is installed below 10 meters above ground level to the lowest point of antenna and the total power of all channels is greater than 1000 W ERP.