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WPCF Headworks Replacement Project Scope of Work <br />31 <br /> <br />types of factors are difficult to forecast and are out of the control of BC. Actual costs may <br />vary substantially from the estimates prepared by BC. <br />City Responsibilities <br /> Provide input on discretionary items and contingencies assumed for Class 4 BODR estimate. <br />Meetings <br /> None <br />Work Products <br /> Sketches and takeoff documents as needed to support development of cost estimates. <br />Deliverables <br /> AACEI Class 5 estimates for selected project alternatives, representing a cost range of -50 <br />percent to +100 percent based on the conceptual project alternatives. <br /> AACEI Class 4 estimate for the total project, assuming a range of -30 percent to +50 percent <br />based on basis of design documents. <br />Task 353 Site Preparation Package Preliminary Design and Task 354 Site <br />Preparation Package Final Design <br />Objective: Work under Tasks 353 and 354 involves developing both Class 3 and Class 1 cost <br />estimates and estimated construction schedule for the Site Preparation Package design developed <br />under Phase 500. <br />Activities/Approach <br /> Task 353 Site Preparation Package Preliminary Design Estimate <br />o Review preliminary design and associated technical documentation for the site <br />preparation package. <br />o Identify key cost drivers, quantities, and assumptions for each element of the design. <br />o Develop an AACEI Class 3 construction cost estimate for complete project construction <br />cost, including direct and indirect costs, contingencies, and allowances. <br />o Summarize comparative costs and highlight major cost differences between sub <br />alternatives. <br />o Develop an estimated construction schedule for the site preparation package based on <br />scope of work reflected in the preliminary design documents. <br /> Task 354 Final Design <br />o Review the final design and supporting design documentation for development of the <br />Class 1 estimate. <br />o Complete quantity takeoffs and unit pricing based on the available design detail. <br />o Develop an AACEI Class 1 construction cost estimate for complete project construction <br />cost, including direct and indirect costs, contingencies, and allowances. <br />o Coordinate with design leads to review the cost estimate and validate scope and <br />assumptions. <br />o Coordinate the cost estimating group, including scheduling estimators and attending <br />coordination calls with the estimating team to field questions and discuss proposed <br />design concepts and discuss draft estimate review comments. <br />o Update site preparation package construction schedule.