Tetra Tech

This report provides background information on environmental sound including: descriptions of the sound and vibration metrics used throughout the report; applicable noise standards and regulations; the results of the ambient sound and vibration measurement program; predicted noise levels from equipment operation; and an assessment of the potential noise impacts from development and operation.

This assessment provides background information on concepts related to environmental sound.

Comments from each of the six public hearings are available for viewing. Note that the public comment period is now closed.

Public Hearing Comments

Draft EIS

The draft EIS public comment period closed November 7, 2019. All 30,000+ comment submittals are now under review for consideration in the compilation of the final EIS.

Media & General Info

Point of Contact
John Scaggs
Tonto National Forest

Apache Leap Special Management Area
Apache Leap SMA website