KOA assisted with environmental documentation for this project, along with other team members. KOA coordinated with affected agencies including the cities of Los Angeles, Inglewood, El Segundo, Hawthorne, Redondo Beach, Lawndale, Torrance and the County of Los Angeles to identify the project impact study area and impact assessment methodology for each jurisdiction. The analysis included all grade crossing locations and operational issues for all collector and arterial routes that would be affected by project grade crossings, under two scenarios that considered either the use of the existing freight rail corridor and associated facilities or a Green Line extension. All scenarios would have a southern terminus in Torrance. Study intersections and roadway segments were evaluated for pre-project and post-project operations throughout the study area, both near station sites and along roadways that would have project grade crossings. Transit services within the study area were inventoried. Travel time-delay analyses were undertaken for major roadway corridors within the study area, for pre-project and post-project scenarios. Potential changes in bus transit routes due to the project were reviewed and analyzed, as input to the bus-rail interface plan at each station site. Based on data exported from the Metro Model, KOA provided post-project traffic data analysis for the study area locations.