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June 11, 2025 Proposal for Stabilization Project Construction, Engineering, and Compliance Management and Phase 2 Preconstruction Engineering and Management WPCP Former Polishing Pond City of San Leandro, San Leandro, California Terraphase Engineering Inc. Page 10 of 14  1 partial day on site per week during Weeks 3-6 of stabilization operations (4 partial days on site) o Terraphase Geotechnical Engineering Subject Matter Expert: 1 partial day site visit during fill operations to review operations and provide technical support if needed. • Conduct monthly QSD/QSP dry-weather SWPPP inspections, weekly on-site BMP inspections, and any pre-, during-, and post-storm inspections that take place during this phase of work. • Conduct off-site engineering, QA, CM, and CGP support, including reviewing and resolving RFIs, preparing design modifications and technical field orders, submittal review, QA reporting, and 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: o Draft and completed project completion punch lists. o Contractor as-built redline markups. o 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.