Agmt24 EKI Environment & Water, Inc.

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o Performance of a subsurface boring exploration consisting of four borings per the table below, including the associated planning, permitting, field marking, traffic control, soil sampling and penetration testing at 5-foot intervals, boring abandonment, surface restoration, and cuttings disposal; Location Proposed Number and Depth of Borings Marshall St near Jefferson Ave 1 boring to 20 feet below ground surface (bgs) Marshall St, between Winslow & Hamilton St 1 boring to 20 feet bgs Railroad Crossing 2 borings, 1 on each side of the crossing (outside of the JPB/UPRR right of way) to 50 feet bgs Boring locations will be within the City right of way and will be accessible with a two-wheel drive, rubber tired, truck mounted, and drill-masted rig, and drilling will not encounter refusal. o Performance laboratory testing of selected soil samples collected from the borings, including natural moisture content and unit weight, Atterberg Limits, unconfined compressive strength, percent passing a No. 200 sieve, sieve analysis, and corrosivity. o Preparation of a draft geotechnical report summarizing findings from the geotechnical investigation; and o Preparation of the final geotechnical report incorporating the City’s comments on the draft geotechnical report.  Subconsultant, Psomas, will perform surveying for the Project, including establishing a minimum of three (3) semi-permanent survey control points, design-level field topographic survey within the road right of way to collect all utility markings, manholes including pipe inverts and size, surface features and any other features that may impact design. The survey limits would be along Broadway from a point 150’± westerly of the center of two (2) existing rail line tracks and extending easterly along Broadway and Marshall Street to intersection of Jefferson, with mapping extended 50’± from Marshall Street north and south at each road intersection along proposed pipeline route. Subconsultant will also recover sufficient boundary monuments to determine boundary and rights-of-way within the mapping limits utilizing record maps and deeds to create a property LandNet. For the LandNet, linework will be based on boundary monuments, record maps, and deeds. The boundary survey work does not include setting of monuments or filing maps/corner records, review of adjoining property deeds or resolution of conflicting title evidence, or the obtaining of a title report. Work will include obtaining the City encroachment permitting and traffic control, plus preparation of a topographic base map. Task 2 Deliverables:  GPR Utility Locating Report in PDF format  Pothole report in PDF format  Copy of utility research and field data notes in PDF format  Draft and final geotechnical report in PDF format  Topographic base map in AutoCAD and PDF format City Responsibilities:  City will obtain any required permits for the geotechnical investigation, topographic surveying, utility locating, and potholing other than the drilling and encroachment permits. Task 3 - 60% Design Submittal (Including Basis of Design) Consultant will prepare the necessary contract documents (construction plans, specifications, and opinions of probable cost [OPC]) in three submittals corresponding to 60%, 90%, and Final (100%) Design Submittals. Prior to each submittal, the work products will be reviewed and revised internally through Consultant’s QA/QC process. ATTY/AGR.2024.152/EKI Environment and Water, Inc. (Redwood City Downtown Recycled Water Extension) (Page 12 of 23)