RES 06035 - Laserfiche WebLink

Draft Environmental Impact Report Bernal Property Phase II Specific Plan 12,200 AM and 13,500 PM peak hour vehicles trips in Pleasanton or an 18 percent increase over existing conditions. Outside Pleasanton, growth projected for the year 201 0 was applied. For the cumulative (buildout) condition, the growth projected in the General Plan was used. This growth would result in an increase of 21,600 AM and 24,900 PM peak hour trips in Pleasanton or a 34 percent increase over existing conditions. Outside Pleasanton, growth projected for the year 2025 was used. Outside Pleasanton, the model forecasts are consistent with the Contra Costa County Transportation Agency and Metropolitan Transportation Commission land use growth assumptions. Regarding roadway and intersection improvements, for the existing plus approved scenario reference should be made to Section 3.5 of the City of Pleasanton Annual Baseline Traffic Report 2003. This report also cites major roadway and freeway improvements identified in the General Plan and other regional planning documents. Moreover, Section 4.7 of the report identifies additional improvements needed to improve most locations to meet the City's LOS D standard. Modeling Approach This analysis required the use to two transportation planning and operational tools. The City's TRANSCAD travel demand model forecasts roadway and intersection turning movement volumes. The peak hour intersection turning movement volumes are imported into the City's Synchro peak hour intersection model. The various steps in this analysis is outlined below. 1. The Existing+Approved AM and PM peak hour traffic conditions were determined at the 48 study intersections. The existing+approved traffic volumes were provided by the City of Pleasanton in the associated Synchro traffic analysis software files. The peak hour Levels of Service (LOS) were then calculated for the 48 study intersections. 2. The Existing+Approved+Project traffic conditions were then estimated for the Bernal Phase II project. This involved estimating the project's trip generation and trip distribution; adding the project's peak hour trips to the Existing+Approved peak hour volumes; and calculating the peak hour LOS for the 48 key intersections. 3. The project includes the construction of a new roadway (Pleasanton Avenue) that connects Bernal Avenue at the north with Valley Avenue to the south. The background traffic projections at each of the analysis intersections were adjusted to reflect the diversion of traffic to the new roadway. The diversion was determined for both the existing plus approved plus project and cumulative conditions. 4. The level of service results were then analyzed to determine if any mitigation measures would be needed to maintain an acceptable peak hour LOS (LOS D or better) at the study intersections for the Existing+Approved+Project analysis scenario. F2