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stt Transportation Impact Study t t� £ Pleasanton Gateway Retail /Office Plaza Y T t ' ` g4,:r, B®S 4sl `- June 2009 T'- ti EXECUTIVE SUMMARY This report documents the Transportation Impact Analysis (TIA) for the Pleasanton Gateway Retail /Office Plaza (Project) in Pleasanton, California. The proposed Project is located on about 39 acres bound by Bernal Avenue to the north, Valley Avenue to the east, a vacant parcel to the south, and Interstate 680 to the west. As proposed, the Project would contain 714,075 square feet of development including: 588,500 square feet of office, a 65,000 square foot grocery store, 59,695 square feet of retail, and a 10 -pump gas station with an 880 square foot sales area. Seven office buildings, and eight retail stores, including the grocery store would be constructed. Five driveways are proposed to serve the site, one from Bernal Avenue and four from Valley Avenue. Driveway operations for Bernal Avenue were evaluated with restricted, modified full access and full access. Based on the analysis results, provision of a modified full access intersection from the Bernal Avenue driveway is recommended to minimize travel time on Bernal Avenue between 1- 680 and Valley Avenue, and provide better operations at the driveways on Valley Avenue. This TIA was prepared in accordance with the policies and procedures established by the City of Pleasanton. The study includes an analysis of 28 intersections that could potentially be impacted by traffic generated by the project. Intersection impacts are identified for the Near -term and Cumulative scenarios. Intersection operations were assessed using 2000 Highway Capacity Manual (2000 HCM) method. Intersection impacts were assessed using Pleasanton significance criteria. Interstate 680 at the Bernal Avenue interchange was evaluated in the study using methods from the 2000 HCM. Freeway impacts were assessed using Alameda County Congestion Management Program criteria, which sets the LOS threshold as LOS E. The analysis also considered project impacts on residential streets, pedestrians, bicyclists, transit, construction, and parking supply adequacy. Because the project would generate more than 100 peak hour vehicle trips, an Alameda County Congestion Management Agency (ACCMA) roadway segrnent analysis was completed. PROJECT TRANSPORTATION CHARACTERISTICS Estimates for Project trip generation were developed by using rates contained in the Institute of Transportation Engineers (ITE), Trip Generation, (7th Edition) and estimates for internal, pass -by, and diverted -link trips derived from the Trip Generation Handbook. The driveway volumes at the project site are expected to he 17,320 daily trips, including 1,285 AM peak hour trips and 1,914 PM peak hour trips. After accounting for pass -by trips, the proposed project is anticipated to increase traffic in the immediate study area by 13,740 daily trips, including 1,235 AM peak hour and 1,644 PM peak hour trips. FINDINGS AND RECOMMENDATIONS The analysis was conducted with various access alternatives at the project driveway on Bernal Avenue opposite Koll Center Drive. Operations of Bernal Avenue between 1 -680 and Valley Avenue would operate better with modified full access provided to the site (no through movements), as opposed to restricted access (right -in /right -out only), or full access. The analysis results are discussed below for the near-term and cumulative condition. FEHR & PEERS TRANSPORTATION CONSULTANTS