Item 17 - Agreements for On-Call Geotechnical Engineering Services

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Geotechnical Observation and Testing Services The purpose of our geotechnical field observation and testing during construction will be to document that the work performed by the contractor is in compliance with the applicable plans and specifications and in accordance with applicable sections of the 2022 California Building Code. Our geologist and/or soils technician will inspect all excavations to verify the conditions anticipated in the approved project geotechnical report have been encountered and to provide corrective recommendations as deemed appropriate. It is not our intent to provide supervision or direction of the contractor or the contractor's subcontractors. We will dispatch to the project site qualified engineering technicians to perform field observation and testing of earthwork operations. Our field testing and observation activities will be performed on an "on -call" basis upon request by the project superintendent at the appropriate times during construction. However, we do require that our field representative be present continuously during the earthwork associated with remedial grading and/or preparation of building pads so that we may properly document the depth overexcavation and geotechnical characteristics of the compaction of the fill. Based on our understanding of the proposed projects, the anticipated tasks for our scope of services will consist of the following field, laboratory and office work, generally presented in chronological order: • Pre -Construction Plan Review: We will perform technical review of the grading plans and foundation plans for the project by our Geotechnical Engineer (GE) and Certified Engineering Geologist (CEG). We will prepare a letter documenting our review of each plan set, including signature and stamp, as needed. In addition, we will provide response to contractor's requests for information (RFI's) as requested. • Pre -Construction Meeting: Our project manager and field operations manager will attend a pre - construction meeting with representatives of the contractors/sub-contractors and construction management team to establish any site access restrictions, points of contact, protocol for scheduling our services, and distribution list for DFRs and test results. • Field Observation and Testing: We will provide a soil technician for periodic and continuous geotechnical observation and testing during site preparation, overexcavation, and fill placement during earthwork construction, and general site grading. The frequency of observation and testing required will be established by the governing agency and the project inspector at the pre -construction meeting. In -situ density testing will be performed using a nuclear moisture/density gauge (ASTM D 6938). • Geotechnical Laboratory Testing: Geotechnical (soil) testing may include, but not limited to, modified Proctor (ASTM D 1557) maximum dry density and optimum moisture content compaction curves, gradation, sand equivalent, corrosivity, expansion and R-Value. • On -call Engineering Support: We will respond to requests for information (RFIs), attend meetings, and support value engineering efforts on an as -needed basis. • Project Management: This scope of work will consist of reviewing DFRs and laboratory test results and preparing these reports for distribution. Geotechnical concerns encountered in the field and noted in the daily reports, and any material tested and found to not conform to project specifications, will be brought to the attention of your designated representative (s). Supervision, quality control and project management will be provided by our Geotechnical Engineer. • Compacted Fill Report: We will prepare a compacted fill report summarizing our test results and observations made during construction.