At the request of the New Jersey Department of Environmental Protection, the U.S. Environmental Protection Agency (EPA) investigated microwave levels in Vernon Township, New Jersey. Vernon is the site of three satellite earth stations which operate a total of over 15 uplink antennas. Each of the three earth station facilities was surveyed with broadband equipment, and frequency-specific data were collected at twenty-five sites in the surrounding communities. EPA gathered data in satellite uplink, terrestrial microwave, and broadcast band frequencies. The highest power density found in any publicly accessible area in Vernon was 60 microwatts/sq cm on the property of one of the earth stations. The highest peak power density found at any of the community measurement locations was approximately 0.003 microwatts/sq cm, in a frequency band that is not used for satellite uplink transmissions. Typical power density values over all the frequency bands studied are well below 0.001 microwatts/sq cm.