LA Metro, in conjunction with the Southern California Regional Rail Authority, has initiated the Brighton to Roxford Double-Track Project (proposed project) in the cities of Burbank, Los Angeles, and San Fernando and the communities of Sun Valley and Pacoima in Los Angeles County, California, on the LA Metro-owned Valley Subdivision, between MP 13.2 and MP 23. 72. The approximate project length is 10.5 miles with an approximately 1.2-mile existing double-track section that is not included in the project alignment from Control Point (CP) McGinley (MP 15.6) east of Penrose Street (MP 15.68) in Sun Valley to CP Sheldon (MP 17.0) west of Sheldon Street (MP 17.05) near Wicks Street. The proposed project would involve the double-tracking of approximately 9 miles of railroad track and related infrastructure, and associated safety improvements. The existing railway is part of the Valley Subdivision, upon which Metrolink operates its AVL commuter rail service, a 76.6-mile rail corridor between Los Angeles and Lancaster; the line is also used by Union Pacific Railroad to carry freight. The AVL was identified as needing infrastructure improvements to add operationall flexibility for eventual improved regional rail and mobility service and added capacity. In addition to double-tracking the mostly single-track line, the proposed project would enhance safety for the corridor communities and commuters on the AVL with safety-related improvements to roadways and sidewalks crossing the tracks, additional station platforms, construction of bridges, and new or extended drainage structure modifications.