Amendment_No_3_Terraphase_09132024

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Amendment No. 3 to Consulting Services Agreement between City of San Leandro and Terraphase Engineering, Inc 9/13/2024 for Treatment Wetland Design Services Page 4 of 8 work of the Stabilization Project. Draft IFB design plans will be submitted to the City for review and comment, and this scope of work includes one round of final revisions to incorporate City review. •IFB Specifications: Terraphase will compile and adapt existing 100% project specifications and prepare a new Soil Stabilization specification section. Revision of existing 100% project specifications are assumed to be limited to Division 00, 01, and 02 and are primarily meant to update project and contract information. Development of the new Soil Stabilization specification section will be informed by technical and logistical findings from the earlier soil stabilization pilot test. Draft IFB specifications will be submitted to the City for review and comment, and this scope of work includes one round of final revisions to incorporate City review. The compiled IFB specifications set will be submitted to the City for formatting and incorporation into City format by others. •IFB Engineers Cost Estimate: Terraphase will develop an Engineer’s Cost Estimate for the Stabilization Project scope of work as described and delineated in the Stabilization Project IFB Design Plans and Specifications. The estimate will utilize cost and quantity takeoff data from the existing 100% Design Cost Estimate to the extent possible. This task does not include substantial revision of the engineering design being estimated, including substantial revision of quantity takeoffs, except for development of new quantity takeoffs associated with stabilization and overlying fill construction tasks. Unit cost data will be escalated as needed to reflect 2025 economic factors. The draft IFB estimate will be submitted to the City for review and comment, and this scope of work includes one round of final revisions to incorporate City review. Task 2.2: Design Support during RFP Development Terraphase will provide engineering design support during preparation of the RFP for construction of the Soil Stabilization project. The RFP will be prepared by others, with Terraphase providing engineering support as requested by the City. This task includes: •Respond to technical requests during RFP preparation by others. •Complete one round of review of the draft RFP from an engineering/design perspective prior to City issuance. Task 2.3: Bid Period Design Support Terraphase will provide engineering design support during the construction bid period, including: •Pre-bid conference: The pre-bid conference will be planned, scheduled, and led by the City or others, with Terraphase project leads, including the project manager and design lead, to provide technical support at the City’s direction. The conference agenda and all other materials will be prepared by others. Post-conference summary and actions will be provided by others. •Bidder question response and RFP addenda: Terraphase project leads will review bidder questions as they are submitted to the City and support the City in development of up to three RFP1 addenda. Addenda will consist of written/narrative question responses, recommended revisions to technical content in the RFP, or revision markups to IFB plans and specifications. Docusign Envelope ID: 53244CDF-B5C0-43CD-8884-BC457F7EFEA3