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Экология ВИЭ / СЭС / Final Programmatic Environmental Impact Statement for Solar Energy Development.pdf
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1 5.13 ACOUSTIC ENVIRONMENT

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3Solar energy facilities could produce noise impacts on nearby residents or wildlife in the

4areas where they are built. In addition, recent ethnographic studies confirmed that spiritual,

5religious, and medical practices and ceremonies are ongoing within the desert southwest and

6such uses could be adversely affected by a change in the acoustic environment (SWCA and

7University of Arizona 2011). Construction noise impacts would be short term and distinct from

8noise impacts from facility operations. For operations, noise generation differs by technology,

9with power block areas (primarily from cooling systems) being the largest noise sources.

10Individual dish engines also produce high noise levels; thus utility-scale dish engine facilities

11with thousands of dish engines would require special consideration of potential noise impacts.

13In general, the information presented in the Draft Solar PEIS remains valid. The largest

14change in assessment of noise impacts is associated with potential impacts on terrestrial wildlife.

15On the basis of comments received and recent references, as applicable, this Final Solar PEIS

16assumes an updated approximate significance threshold of 55 dBA to correspond to the onset of

17adverse physiological impacts (Barber et al. 2010) on terrestrial wildlife in areas of special

18concern. However, there is also the potential for other effects to occur at lower noise levels

19(Barber et al. 2011). Additional details and discussion can be found in Section 5.10.2 of this

20Final Solar PEIS.

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Additional updates are as follows:

 

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5.13.1 Common Impacts

 

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5.13.1.1

Construction: Update to Section 5.13.1.2 of the Draft Solar PEIS

 

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• Section 5.13.1.2 of the Draft Solar PEIS is being updated to note that noise for

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solar energy facilities could affect soundscapes in National Parks and trails.

 

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Noise from construction would change the soundscape1 of remote areas,

 

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including National Parks and trails, and could affect recreational uses and park

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visitor experiences. The NPS is charged with evaluating, protecting, and

 

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enhancing park soundscapes (NPS 2000). Given the proximity of some

 

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proposed SEZs to National Park units (e.g., Joshua Tree NP to the Riverside

 

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East SEZ, California; Death Valley NP to Amargosa Valley SEZ, Nevada),

 

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potential impacts on park soundscapes should be part of the ROW evaluation

 

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process. Site-specific assessment of noise impacts from construction activities

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would be required as a part of ROW application processing. Appropriate NPS

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personnel should be consulted during assessment of impacts on the

 

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soundscapes of NPS units.

 

 

 

 

 

1 The NPS defines a soundscape as “the total ambient acoustic environment associated with a given environment

 

(sonic environment) in an area such as a National Park. It is also refers to the total ambient sound level for the

 

park. In a National Park setting, it is usually composed of both natural ambient sounds and a variety of human-

 

made sounds” (NPS 2000).

 

 

Final Solar PEIS

5-21

July 2012