Amendment No 4 Terraphase 07172025 Combined

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Amendment No. 4 to Consulting Services Agreement between City of San Leandro and Terraphase Engineering, Inc 7/17/25 for Treatment Wetland Design Services Page 7 of 11 compliance reporting as described in the Engineering, Construction, and CGP Compliance Management Scope of Work. This task assumes a 6-week total duration for this phase of the Stabilization Project for on-site oversight and management scope, based on review of the provisionally selected Contractor’s proposal. If the Contractor’s actual construction schedule requires additional on-site oversight, Terraphase will confirm the additional effort with the City, including requesting additional budget if required. As this task does not include full-time oversight for the full duration of this phase, the assumed level of effort for this task does not cover any additional required pre-, during-, or post-storm SWPPP BMP inspections during this phase if these are required when Terraphase staff are not already on site. If required, Terraphase will confirm the additional effort with the City, including potentially requesting additional budget. Task 5: Closeout Phase Engineering, CM, Compliance Management The Closeout phase of the project is defined as the period beginning with completion of post-stabilization fill and continuing through installation of the post-fill dewatering system, Contractor closeout inspections and submittals, site cleanup, City issuance of final completion to the Contractor, and demobilization from the Site. Terraphase will provide all engineering/QA, CM, and CGP compliance management as described in the Engineering, Construction, and CGP Compliance Management Scope of Work described above during the Closeout phase of the project, and as further detailed below: • Oversee installation of the post fill dewatering system, assuming 1 day on-site per week by the Terraphase staff level field manager for 2 weeks (2 total days on-site). • Review, provide comments, and/or approve the following initial Contractor submittals:  Draft and completed project completion punch lists.  Contractor as-built redline markups.  Stabilization Operations Plan • Prepare project Record Drawings based on Terraphase construction QA records and approved Contractor redline markups. • Manage and facilitate the on-site construction closeout process, including Contractor punch-list review, substantial completion inspection, and final completion inspection, including 1 full-day site visit and one partial-day site visit by the Terraphase engineering/CM lead. • Compile and transmit all project documentation to the City for archiving, including closing access to the project CMIS. • Assisting the City as needed for City closeout of their contract with the Contractor. • Conduct one weekly on-site BMP inspection during Contractor demobilization and cleanup. This task assumes a 2-week field duration and subsequent 2-week off-site duration for this phase of the Stabilization Project, based on review of the provisionally selected Contractor’s proposal. Terraphase will not be on-site during this phase other than as described above. If the Contractor’s actual construction schedule requires additional on-site oversight, Terraphase will confirm the additional effort with the City, including requesting additional budget if required. Docusign Envelope ID: 273A48E5-126B-49E9-B9E2-7FB9D28A1969