CSA Amendment_Terraphase Engineering, Inc

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Amendment No. 1 to Last Revised 5/24/2024 Consulting Services Agreement between City of San Leandro and Terraphase Engineering, Inc. for Soil Risk Analysis Page 1 of 3 AMENDMENT NO. 1 TO CONSULTING SERVICES AGREEMENT BETWEEN THE CITY OF SAN LEANDRO AND TERRAPHASE ENGINEERING, INC. FOR 3RD PARTY REVIEW OF SOIL SCREENING AND ANALYSIS FOR IMPORTED SOIL FOR THE MONARCH BAY GOLF COURSE GRADING PROJECT This Amendment No.1 (“Amendment”) is made by and between the City of San Leandro (“City”) and Terraphase Engineering, Inc. (“Consultant”) (together sometimes referred to as the “Parties”) as of May 24, 2024, and amends that certain Consulting Services Agreement (“Agreement”) dated October 10, 2023, between the Parties. WHEREAS, City and Consultant have executed the Agreement, pursuant to which Consultant has provided certain consulting services to City with regard to the 3rd party review of soil screening and analysis for imported soil for the Monarch Bay Golf Course Grading Project, and WHEREAS, the Parties desire to amend the Agreement to include additional soil screening and analysis review and an Ecological Screening Level Risk Evaluation of Vanadium in fill material. NOW THEREFORE, for good and valuable consideration, the sufficiency of which is hereby acknowledged, the Parties hereby agree to amend the Agreement as follows: 1. Section 2 of the Agreement entitled “Compensation” is hereby amended to pay Consultant a sum not to exceed $35,860; and 2. Exhibit A of the Agreement entitled “Scope of Services” is hereby amended to read: Task 3 – Prepare a Technical Memorandum summarizing the approach to, and outcome of, the ecological screening level risk evaluation along with supporting tables, as needed, and citations for the reference materials used. Specific scope items will consist of the following:  Briefly describe the habitat available at the Monarch Bay Golf Course and the applicable ecological receptor groups.  Review information from the scientific literature on regional background concentrations for vanadium in soil.  Demonstrate that vanadium concentrations in the fill material are consistent with regional background soil concentrations using applicable metrics (e.g., range, average, upper bound values)  Based on the above, determine whether vanadium represents a chemical of potential ecological concern (COPEC) and, if so, further evaluate the potential significance of risk to ecological receptors at the golf course from exposure to vanadium in the fill material following golf course construction  Prepare a draft technical memorandum for the City summarizing the approach and outcome of the evaluation DocuSign Envelope ID: A7236BEB-C8CF-4AB0-94AF-FAEE0878C32A