Tag Archives: DNL. noise

FAA’s DNL Noise Standards Allow Significant Health Risks to Communities Surrounding Airports

The Federal Aviation Administration last reviewed the technical bases for its noise policies in 1992.  The “day-night average sound level” (DNL), which is used by the FAA for establishing the “threshold of significant impact” under NEPA and the levels below … Continue reading

Posted in Airport, Aviation, Environmental, FAA, Regulatory | Tagged , , , , | 1 Comment