RES 211231 Exhibit A - Laserfiche WebLink

Environmental Checklist and City of Pleasanton–10x Genomics Project Environmental Evaluation Initial Study/Mitigated Negative Declaration 126 FirstCarbon Solutions Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480024/ISMND/wp/21480024 10x Genomics Project Full Screencheck ISMND.docx Springdale Avenue (Condition of Approval 1) and Stoneridge Mall Road at Fabian Way (Condition of Approval 2) upgrade traffic signal control and timing on Stoneridge Drive between Foothill Road and the I-680 Northbound Ramps to better coordinate travel flows through the corridor and install conduit for the potential installation of a traffic signal at the project driveway intersection with Springdale Avenue. Detailed discussions, including other operational recommendations, are provided in Appendix J. Would the project: a) Conflict with a program plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? Less than significant with mitigation incorporated. The proposed project would create a significant impact related to the roadway system if at unsignalized intersections, the proposed project would result in any of the traffic signal warrants included in the CA Manual on Uniform Traffic Control Devices (MUTCD) to be satisfied, or for a location where any of the warrants are satisfied prior to the project, the proposed project would increase overall travel volume through the intersection by more than 1 percent. Springdale Avenue at the Project Driveway satisfies the peak hour signal warrant with the addition of project traffic in the near-term and cumulative conditions. However, the addition of project traffic would only marginally increase delay at the intersection, which operates at a LOS A or B in all scenarios. The proposed project would create a significant impact related to the roadway system if the project creates the potential for excessive vehicle queue spillback that could periodically block or interfere with pedestrian, bicycle or transit facilities. The proposed project would contribute to excessive vehicle queue spillback on Springdale Avenue (southbound) between Stoneridge Drive and the project driveway entrance, Stoneridge Drive (eastbound left turn lane) at Springdale Avenue and Stoneridge Drive (eastbound) between Stoneridge Mall Road and Springdale Avenue. These locations could periodically block or interfere with pedestrian, bicycle, or transit facilities, which would be considered a potentially significant impact. Implementation of MM TRANS-1 would require modification of the intersection of Stoneridge Drive at Springdale Avenue to convert the southbound through and left turn lane into a left turn only lane and convert the southbound right turn only lane into a through and right turn lane. In addition, the eastbound left-turn pocket would be required to be extended to provide 200 feet of vehicle storage. The installation of a conduit for a future traffic signal would be required at the intersection of Springdale Avenue at the Project Driveway for Phase 1. The City’s Traffic Engineering Division would monitor delays and queuing at the intersection. The installation of a traffic signal would be required prior to the buildout of Phase 2.103 Implementation of MM TRANS-2 would require the City’s Traffic Engineering Division to monitor and manage traffic signal timings on Stoneridge Drive between Foothill Road and I-680 Northbound ramps to better coordinate travel flows through the corridor and minimize vehicle queue spillback. This requirement includes any necessary upgrading of traffic signal controller equipment and timing on Stoneridge Drive between Foothill Road and the I-680 Northbound Ramps to better coordinate travel flows through the corridor and minimize vehicle queue spillback. This measure would also include 103 Fehr & Peers. 2021. 10x Genomics Transportation Impact Analysis Report. February.