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Consulting Services Agreement between City of San Leandro and Exhibit A GPA Consulting for Environmental Services for Lake Chabot Road Erosion Repairs Page 3 of 11 appropriate. Vegetation communities and special-status resources, including plants and wildlife observed on site, will be digitized into a Geographical Information System (GIS) format. • A draft report will be submitted and coordinated with the City and Caltrans as needed for review and approval of the report. Task 3.1 Deliverables: One electronic copy of the Draft and Final NES or NES (MI) Report Task 3.2: Noise and Vibration Memorandum • A technical noise memorandum will be prepared to evaluate short-term construction noise and groundborne vibration impacts associated with the proposed construction activities. The technical memorandum will include a description of the existing noise environment, based on existing environmental documentation/information and a review of site reconnaissance data. Predicted construction-generated noise and groundborne vibration levels will be quantified in accordance with Caltrans-recommended methodologies and guidance. • The significance of noise and groundborne vibration impacts will be assessed in comparison to applicable standards and recommended thresholds. • Construction noise levels will be quantified based, in part, on project-specific construction information. • Measures will be identified to avoid, minimize, and/or mitigate for significant or potentially significant impacts from construction noise and groundborne vibration. Task 3.2 Deliverables: One electronic copy of the Draft and Final Noise & Vibration Memo Task 3.3: Phase I Initial Site Assessment • A Phase 1 Initial Site Assessment (ISA) would be prepared in accordance with ASTM E1527-21 and Caltrans standards to evaluate the project site and adjacent properties for evidence of Recognized Environmental Conditions (REC) and/or potential RECs that may significantly impact the constructability, feasibility, and/or cost of the project. The ISA will include a historical records review, environmental records review, site reconnaissance, interviews with pertinent knowledgeable persons, and environmental sampling. • Soil samples for ADL analysis will be collected at both slide areas. Samples of thermoplastic roadway striping will also be collected. These samples will be used to assess if lead is present at concentrations that exceed hazardous waste limits. • A single ISA report will be prepared that includes both Site A and Site B. The report will include, but not necessarily be limited to, the following: description of the project alignment and vicinity; summary of the local geologic and hydrogeologic conditions; summary of the historical record review; findings from the environmental records review; site reconnaissance observations including pertinent photos; environmental sampling analytical results; interview results; findings and conclusions, and recommendations as warranted by the findings. Task 3.3 Deliverables: One electronic copy of the Draft and Final ISA Report Task 3.4: Environmental Sampling • Soil samples will be collected by hand auger from up to 8 locations along Lake Chabot Road (four locations at Site A, four locations at Site B). Up to three soil samples will be collected and analyzed from each location (for a total 24 soil samples) to be analyzed for total lead. Samples with total lead concentrations exceeding threshold limits will be further analyzed for soluble lead (both WET and TCLP methods). Select soil samples will also be analyzed for corrosivity (soil pH). • In addition, one sample each of the white and yellow thermoplastic striping material within Lake Chabot Road will be collected and analyzed for lead and cadmium concentrations that exceed hazardous waste. Docusign Envelope ID: 78E72B1A-FA71-4376-9F02-D7D222FBE69F