4.9. SR 08-05-2019 - Laserfiche WebLink

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Project Approach, Page 12 Project Approach - Section 3 private and public utilities, and preliminary proposed right -of-way lines. Prepare the preliminary road design depicting roadways, turn lanes, acceleration lanes, shoulders, curb and gutters, and retaining walls. Determine preliminary vertical alignment including profile grades, vertical curves, and top of finished surface. Prepare a preliminary drainage plan indicating proposed storm sewer, culverts, ditches, and other drainage features. Depict construction limits layout depicting the construction limits based on the design. Prepare cross section sheets at 50 foot intervals depicting existing ground, finished ground, existing right - of-way and proposed easement limits. Task 3 - Preliminary Cost Estimate Based on the 30% design documents, estimate the applicable quantities for the various construction items. Utilizing unit prices from similar projects, prepare a preliminary cost estimate of the improvements. Task 4 – Preliminary Design of City Utilities and Draft Feasibility Report Prepare a preliminary design of the proposed sanitary sewer and watermain improvements. If requested, prepare a draft feasibility report which estimates the project cost, individual assessment amounts, and a description of the methodology used to calculate individual assessment amounts for affected parcels. Task 4 – Final Feasibility Report Prepare a final feasibility report which incorporates revisions as necessary based on City comments of the Draft Feasibility Report. Task 5 - Project Memorandum/Environmental Document We will coordinate and complete the required Project Memorandum/Environmental documentation. Complete the Level 1 Archeological Review, complete State or Federal agencies’ information regarding social, economic, and environmental review to complete the Project Memorandum and to ensure the project meets federal and state aid standards. Deliverables: 30% Design Documents, Preliminary Cost Estimate, Draft Feasibility Report, Final Feasibility Report, Project Memorandum/Environmental Document. Phase 11 - Geotechnical Information Task 1 - Pavement Typical Section Design Review Level 1 Layout and obtain soil borings and pavement cores in the selected alignment. Obtain permission from property owners. Task 2 – Geotechnical Investigation Identify locations for pavement cores and soil borings. We anticipate obtaining pavement cores to determine accurate pavement depths. This information will be needed to obtain accurate quantities for removal or salvage if the material is reclaimed for road base. We also propose to obtain soil borings to obtain an accurate R-value estimate for pavement design and double-ring infiltrometer tests for stormwater design. Task 3 - Materials Design Recommendation Letter Prepare a materials design recommendation letter for the Yale Street extension, Twin Lakes Road, and