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<br />Amendment No. 4 to <br />Consulting Services Agreement between City of San Leandro and Terraphase Engineering, Inc 7/17/25 <br />for Treatment Wetland Design Services Page 5 of 11 <br /> Prepare and submit a Daily CM/Engineering/QA Report after each day of <br />on-site oversight. This report will include a summary of work performed, <br />CM activities, Engineering support activities, QA activities, <br />technical/production issues encountered, representative photos, and a 1- <br />week lookahead of significant CM/engineering/QA tasks. <br /> Terraphase engineering/CM lead, 12 total days on-site as detailed below: <br /> 2 days on site per week during Weeks 1-3 of stabilization operations (6 total <br />days on site) <br /> 1 day on site per week during Weeks 4-6 of stabilization operations (3 total <br />days on site) <br /> 1 day on site during Weeks 7-10 of stabilization operations (1 total day on site) <br /> 2 days on site during Week 11 (assumed final week) of stabilization operations <br />to facilitate stabilization closeout (2 total days on site) <br /> Terraphase Geotechnical Engineering Subject Matter Expert: 3 partial day site visits during <br />stabilization operations to review operations and provide technical support if needed. <br />• Conduct QA field penetrometer and laboratory testing of completed stabilization cells to compare with <br />Contractor-provided data. Assumes one duplicate confirmation laboratory sample per week, and up to <br />one duplicate field penetrometer test per day when on site and as available during active stabilization <br />operations. QA confirmation laboratory sample collection method will be determined after reviewing the <br />Contractor’s Stabilization Construction Quality Control Plan. <br />• Conduct monthly QSD/QSP dry-weather SWPPP inspections, weekly on-site BMP inspections, and <br />any pre-, during-, and post-storm inspections that are required. <br />• Conduct off-site engineering, QA, CM, and CGP support, including reviewing and resolving RFIs, <br />preparing design modifications and technical field orders, submittal review, QA reporting, and <br />compliance reporting as described in the Engineering, Construction, and CGP Compliance <br />Management Scope of Work. <br />This task assumes a 11-week total duration for this phase of the Stabilization Project for on-site oversight <br />and management scope, based on review of the provisionally selected Contractor’s proposal. If the <br />Contractor’s actual construction schedule requires additional on-site oversight, Terraphase will confirm the <br />additional effort with the City, including potentially requesting additional budget. <br /> <br />Task 4: Fill Phase Engineering, CM, Compliance Management <br />The Fill phase of the project is defined as the period beginning after completion and acceptance of all <br />sludge- soil-cement stabilization operations, and includes all fill import, placement, compaction, and <br />grading, installation and testing of the post-fill dewatering system. This phase ends at the start of site <br />cleanup, demobilization, and project closeout. <br /> <br /> <br />Terraphase will provide all engineering/QA, CM, and CGP compliance management as described in the <br />Engineering, Construction, and CGP Compliance Management Scope of Work described above during the <br />Fill phase of the project, and as further detailed below: <br /> <br />• Provide onsite engineering, CM, and CGP compliance field oversight and technical assistance: <br />o Terraphase staff level field manager: <br />Docusign Envelope ID: 273A48E5-126B-49E9-B9E2-7FB9D28A1969