Planning Commission meeting agenda packet 7-9-25

City of Pleasanton—Vineyard Avenue Residential Project Consistency Checklist 15183 Consistency Checklist 102 Proposed Project Analysis and Conclusion The following discussion provides an analysis of potential hazards and hazardous materials associated with upset or accident conditions related to the proposed construction activities and existing on-site conditions. The analysis is primarily based on the Phase I ESA prepared for the proposed project by ENGEO. Construction Activities Construction activities associated with the proposed project would involve the use of various products such as concrete, paints, and adhesives. In addition, heavy-duty construction equipment would contain hydraulic fluid, diesel fuel, and other petroleum products. Small quantities of such potentially toxic substances would be used at the project site and transported to and from the site during construction. However, the project contractor would be required to comply with all California Health and Safety Codes and local County ordinances regulating the handling, storage, and transportation of hazardous and toxic materials. Pursuant to California Health and Safety Code Section 25510(a), except as provided in subdivision (b), the handler or an employee, authorized representative, agent, or designee of a handler, shall, upon discovery, immediately report any release or threatened release of a hazardous material to the unified program agency (in the case of the proposed project, the Livermore-Pleasanton Fire Department [LPFD]) in accordance with the regulations. The handler or an employee, authorized representative, agent, or designee of the handler shall provide all State, City, or County fire or public health or safety personnel and emergency response personnel with access to the handler's facilities. In the case of the proposed project, the contractor is required to notify the LPFD in the event of an accidental release of a hazardous material, who would then monitor the conditions and recommend appropriate remediation measures. Existing On-Site Hazardous Conditions The purpose of the Phase I ESA was to review past and present land use practices and activities at and near the project site for evidence of RECs that could result in impacts to soil, soil vapor, surface water, and/or groundwater at, beneath, or originating from the project site. As part of the process, the Phase I ESA included review of historical documentation, aerial photography, regulatory agency files, environmental sites radius reports, and site reconnaissance. According to the American Society for Testing and Materials