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 5 of 8 •Proposal review and evaluation: Terraphase will review all proposals received by the City and attend one teleconference to discuss any engineering/design feedback arising from proposal review. All communication with bidders during the bid period will be led by the City or others. Task 3: Treatment Wetland Project Preconstruction Design Support The Treatment Wetland Project will mobilize after an assumed 6-month stabilized surface settlement period after completion of the Stabilization Project. Task 3 Scope of Work Task 3.1: Development of IFB PS&E Terraphase will complete minor updates to the existing 100% design documents for use in the Treatment Wetland Project bid package: •IFB Design Plans: Terraphase will complete minor revisions to the 100% design drawings as needed to incorporate into the Treatment Wetland Project RFP1. Terraphase expects design plan revisions to be limited to hatching out work completed under the earlier Stabilization Project and updating project title blocks for IFB version control. This task does not include substantial revision of the actual engineering design elements depicted in the existing 100% plans. The compiled IFB plan set will be submitted to the City for incorporation into the RFP. •IFB Specifications: Terraphase will complete minor revisions to the 100% project specifications as needed to incorporate the specifications into the Treatment Wetland Project RFP1. Terraphase expects specification content revisions to be limited to removing content associated with work completed under the earlier Stabilization Project. This task does not include substantial revision of the actual engineering elements depicted in the existing 100% specifications. 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 update the 100% design cost estimate for the Treatment Wetland Project. The estimate will delineate cost items that are to be built under the Treatment Wetland Project contract, but otherwise does not include substantial revision of the engineering design being estimated. Unit cost data will be escalated as needed to reflect 2025 costs. The draft IFB estimate will be submitted to the City for review and comment, and this task includes one round of final revisions to incorporate City review. Task 3.2: Design Support during RFP Development Terraphase will provide engineering design support during preparation of the RFP for construction of the Treatment Wetland 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. Docusign Envelope ID: 53244CDF-B5C0-43CD-8884-BC457F7EFEA3