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Urban Parks
Pages 15-16

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From page 15...
... The National Parks Air Tour Management Act does not provide specific noise limits to be considered as part of the ATMP. Additionally, the National Park Service's "Soundscape Preservation and Noise Management" Director's Order #47 that expired in 2000 articulated National Park Service operational policies that required, to the fullest extent practicable, the protection, maintenance, or restoration of the natural soundscape resource in a condition unimpaired by inappropriate or excessive noise sources ("Soundscape Preservation and Noise Management" 2000–2004)
From page 16...
... . Measured noise levels were compared with locally permitted levels, and were classified as "acoustically polluted or unpolluted." Measured values were also evaluated according to international legislation from Rome, Germany, WHO, and the U.S.


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