RES 211231 Exhibit A - Laserfiche WebLink

Environmental Checklist and City of Pleasanton–10x Genomics Project Environmental Evaluation Initial Study/Mitigated Negative Declaration 130 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 inbound lane and two outbound lanes. The two outbound lanes would be configured as left and through-right. Under MM TRANS-2, operations would be required to be monitored after completion of Phase 1 and before project buildout to determine if the through-right lane should be reconfigured as a left-through-right lane. With a left-turn and a left-through-right lane, additional intersection improvements to accommodate the dual left would be required, including signalization to better allocate right-of-way and improve pedestrian safety. All conduit and other infrastructure for a signal should be constructed as a part of Phase 1 to minimize future disruptions to people walking, bicycling and driving (MM TRANS-1). As such, impacts would be less than significant with mitigation incorporated. d) Result in inadequate emergency access? Less than significant impact with mitigation incorporated. The project site is in an existing developed portion of the City of Pleasanton and would not change the location of emergency facilities. The site access is proposed from three existing driveways that would not be marginally changed with implementation of the proposed project. All project driveways would serve as access points for emergency vehicles. Project driveways are proposed to be at least 20-feet wide, and the internal drive aisles are proposed to be at least 24-feet wide. While these dimensions meet regulations for emergency vehicle widths, an emergency vehicle turning movement assessment is recommended to ensure the adequate vehicle has been designed for and would be provided full access to the project site. Additionally, the Applicant would be required to provide emergency vehicle turning movement analysis that demonstrates the ability of a standard LPFD Fire Truck to maneuver through the project site under MM TRANS-4. As such, the proposed project would provide adequate emergency access with mitigation incorporated. Mitigation Measures MM TRANS-1 The Applicant shall modify the intersection of Stoneridge Drive at Springdale Avenue to convert the existing 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 shall be required to be extended to provide 200 feet of vehicle storage. The Applicant shall install a conduit for a future traffic signal at the intersection of Springdale Avenue at the Project Driveway for Phase 1 of the proposed project. The City’s Traffic Engineering Division shall monitor delays and queuing at the intersection. The installation of a traffic signal by the Applicant in conjunction with the City shall be required prior to the buildout of Phase 2. MM TRANS-2 The City’s Traffic Engineering Division shall monitor and manage traffic signal timings on Stoneridge Mall Road Drive between Stoneridge Mall Road and Springdale Avenue 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