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Mike Tassano January 31, 2025 Page 3 of 37 Introduction This memorandum summarizes the results of the travel patterns assessment completed by Fehr & Peers for the El Charro Road extension project. El Charro Road’s current terminus is at Stoneridge Drive/West Jack London Boulevard and the project would extend the road south, connecting to Stanley Boulevard in the City of Pleasanton. This project is included in the 2005 Pleasanton General Plan Update, the City’s Traffic Impact Fee program, and is part of the East Pleasanton Specific Plan. According to the General Plan, the extension is proposed to provide congestion relief for Pleasanton trips and to better connect East Pleasanton, but its construction must consider the possibility that some people may use it to cut through the City given the existing freeway congestion during the AM and PM peak periods. The analysis considers the transportation effects of the potential extension by reviewing traffic volumes, travel times, level of service, and other key traffic indicators. The assessment utilizes multiple data sources such as existing counts, StreetLight data, and information from two travel demand models (City of Pleasanton Model and Alameda CTC Model) to analyze the impacts of the extension. The project consists of the following roadway modifications: • El Charro Road extension and widening to two lanes per direction. • Busch Road extension to El Charro Road and widening to two lanes per direction. Existing Travel Patterns Assessment To better understand who might use the El Charro Road extension, and which existing roadways would benefit from the redistribution of traffic, StreetLight “Big Data” was used to perform origin- destination (OD) analyses for the following routes: • Santa Rita Road between Valley Avenue and Stoneridge Drive • I-680 between Bernal Avenue and Stoneridge Drive • Isabel Avenue (SR 84) between Stanley Boulevard and Jack London Boulevard For this analysis, 13 zones were established to represent potential origin and destination trips that might use the routes outlined above, and potentially the El Charro Road extension. These zones were then used to examine the top origins and destinations of travelers on those roadways for each of the study routes, and if they could benefit by re-routing their trips through the proposed extension. For example, in the case of Santa Rita Road users, trip origins in the downtown Pleasanton area (Zone 6) that travel eastbound on I-580 to Zone 1 or Zone 12 would benefit from the extension, given that the new route is more direct. Figure 1 shows the OD zones used in the analysis. Table 1 presents the proportion of trips from each study route by direction and peak hour that could benefit from the El Charro Road extension