Final Environmental Assessment for the Update and Implementation of the Total Force Training Mission for Visiting Units (Operation Snowbird, Multi-Service, and Foreign Military Sales), Davis-Monthan Air Force Base, Arizona.

摘要

This EA has been prepared in accordance with the National Environmental Policy Act (NEPA). The EA team focused the analysis on the following resources: noise, air quality, socioeconomics, environmental justice, public safety, and cultural resources. Increases in the number of sorties would occur under the Preferred Alternative over the baseline year (2009), but would be similar to historic numbers of sorties in the past decade. Additional off-base land area would be subjected to Day/Night Average Sound Levels (DNL) greater than 65 decibels (dB) southeast and northwest of DMAFB; approximately 128 residences would be affected by a slight change in the 65 dB DNL. No additional residences in the 70 dB DNL contour would be affected. Air emissions from the additional sorties would be below de minimis thresholds. Negligible or no impacts regarding socioeconomic conditions, including property values, employment, and environmental justice would occur. No measurable increase in public health or safety risks would occur; the Air Force has supported visiting unit training at DMAFB for decades with no Class A mishaps and this safety record would be expected to be maintained. No adverse impacts on historic properties would be expected.