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June 13, 2024 <br />HWA Project No. 2024-P180-21 <br />Proposal for Geotechnical Engineering Services <br />Everett Stormwater Conveyance Improvements 6 HWA GeoSciences Inc. <br />• HWA will keep all soil samples collected during these investigations until issuance of the <br />draft geotechnical report. Prior to disposal, HWA will inform Otak who may direct HWA <br />to store the samples, to dispose of the samples, or to deliver the samples to the City. If <br />requested, HWA will store the samples for the City at a rate of $1.00/sample/month <br />($25.00/month minimum charge). HWA can deliver the samples to the City for a <br />maximum charge of $100. HWA will notify Otak of the monthly rate for storage prior to <br />disposal or in-house storage. Proposed project costs do not include the cost of sample <br />storage. <br />• All costs are estimated and may be increased or decreased within the limits of the total <br />budget at the discretion of HWA's project manager. <br />• The monitoring wells installed as part of the field explorations will be maintained <br />throughout design and abandoned by others during construction. <br />PROJECT BUDGET <br />HWA estimates that the alternate scope of services proposed herein will require a budget of <br />$81,891 to accomplish the geotechnical engineering tasks proposed herein, as detailed on the <br />attached project cost estimate spreadsheet. HWA agrees not to exceed the above cost estimate <br />without your prior authorization. However, if during the evaluation of the available data <br />unanticipated subsurface conditions are revealed which would require a level of effort beyond <br />the scope of study, HWA will contact you immediately to discuss any necessary modifications to <br />our scope of services and/or budget estimate. A breakdown of the cost estimate for the project is <br />provided in Table 1. <br />Table 1: Fee Estimate Breakdown <br />Task Estimated Fee <br />Field Investigation Program $12,210 <br />Subcontracted Expenses (includes 12 percent markup) $41,989 <br />Groundwater Monitoring $3,169 <br />Geotechnical Laboratory Testing $3,650 <br />Direct Expenses $1,109 <br />Engineering Analyses and Reporting $19,764 <br />Total Estimated Fee $81,891 <br />The budgets presented in this proposal reflect an estimate based on our current understanding of <br />the project requirements for a scope of work developed from the information provided. HWA