Travis AFB Sustainability Study Report Final Background Report

Findings Impacts to VORTAC radio navigation beacon ISSUE MINOR‐4  The Sonoma Raceway has caused operational impacts to the VORTAC radio navigation beacon at Skaggs Island that have caused it to be shut down for periods of time. At one time, the VORTAC radio navigation had be shut down during large events at the Sonoma Raceway due to spectrum overload, but this issue has been fixed through equipment / software upgrades and the beacon no longer has to be shut down. Compatibility Assessment Skaggs Island Naval Communication Station is a former US Navy installation located near California SR 37 in Sonoma County, between the cities of Novato and Vallejo. The naval base engaged in several communications and intelligence gathering functions for the Navy and other federal intelligence organizations until it closed in 1993. However, the VORTAC radio navigation beacon remains operational at the site. ISSUE MINOR‐5 Cities are required to send every rezoning application through the ALUC for commission hearing and approval. Compatibility Assessment Sonoma Raceway, a 2.52‐mile racetrack, is located about four miles west of Skaggs Island in the southern Sonoma Mountains. The raceway hosts the NASCAR Sprint Cup Series races each year, the Verizon Indy Car Series, and several other auto and motorcycle races. During major races, with additional seating added to the raceway, the seating capacity at the raceway expands to 102,000 seats. The California State Aeronautical Act requires that the Solano County ALUC review plans, ordinances, and future development for consistency with the Travis AFB LUCP. The Solano County ALUC Review Procedures apply to all lands within the Airport Influence Area (AIA), which covers all of Solano County. This review is conducted to ensure future development is compatible with Travis AFB operations. The types of actions that are reviewed by the ALUC include: Large raceway events can cause a spectrum overload due to thousands of communication devices (cell phones, radios, etc.), interfering with the VORTAC radio navigation beacon. At one time, this resulted in the FAA having to shut down the beacon and notify Travis AFB of the outage during large events to prevent interference. Since that time, the issue has been fixed with equipment / software upgrades and the beacon no longer has to be shut down during events at the raceway. While this issue was brought up during the TSS process, it is adequately managed and does not require any strategies to address it. TSS Background Report Impacts from the Airport Land Use Commission review  The adoption or approval of any amendment to a general or specific plan affecting the property within an AIA.  The adoption or approval of a zoning ordinance or amendment there of building regulation that affects property within the AIA.  Proposed redevelopment of a property for which the existing use is consistent with the local general plan and/or specific plan, but nonconforming with the LUCP compatibility criteria. Page 5‐7

Travis AFB Sustainability Study Report Final Background Report | Page 127