Agenda - Council - 10/23/2018 - Laserfiche WebLink

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pavement, generally meeting the City of Ramsey's standard pavement design. Existing ditches will require re -grading due to the soil corrections for residential streets, however, driveway culverts are not anticipated to be affected by this project. Drain tile will be added to properly drain the soil corrections. No other storm sewer improvements are proposed with this project. The engineer's opinion of probable costs for completing the proposed improvements outlined in this report is $239,464.57. Estimated costs include 5-percent contingency costs plus 23-percent indirect costs for administrative, engineering, finance and legal costs. A summary of the engineer's opinion of probably costs is included in Appendix Bin the attached Feasibility Report. A total of 8 assessable parcels have been identified. Staff recommends applying 25-percent of the eligible project costs equally across the 8 assessable properties using the "per lot" assessment method. Eligible project costs include everything except subgrade correction costs. This results in a proposed preliminary assessment rate of $3,919.90 per assessable parcel. Staff recommends ordering a special benefit consultation report for this project to verify the proposed assessment amount will not exceed the benefit to the properties. If the report concludes the benefit to the properties is less than the proposed preliminary assessment rate, Staff will then propose to lower the assessment rate accordingly during the Assessment Hearing, which is scheduled for October 8, 2019. If the report verifies the assessment rate as proposed is justified, Staff will propose to adopt the final assessment roll using the rate as preliminarily proposed. Two (2) soil borings were completed by Braun Intertec to assist with the preparation of this report. Pavement design recommendations were offered by Braun Intertec, and Staff considered and incorporated Braun's recommendations to varying degrees while preparing this report. Ground Penetrating Radar (GPR) was conducted on all street segments within the project. The GPR identifies existing bituminous pavement and aggregate base thicknesses, and is used to help Staff determine the appropriate treatment. Copies of Braun Intertec's GPR results and Geotechnical Exploration are attached inAppendix C in the attached Feasibility Report. This improvement project, which is listed in the City's current 10-year Capital Improvement Plan, is proposed to be funded using a combination of special assessments to benefiting properties, street reconstruction bond proceeds, and storm sewer funds. Staff has not yet discussed the proposed improvements with local property owners. However, Staff has scheduled a neighborhood information meeting for November 8, 2018 for the purpose of explaining the proposed improvements and assessments in more detail, and to gather public input on the project, including any information which should be explored in more detail during development of plans and specifications. Staff will incorporate comments and present this information to Council during the Public Hearing on November 13, 2018. This project would best be constructed as a stand-alone project and is necessary, feasible, and cost-effective from an engineering standpoint, and can be constructed as proposed herein. Notification: Upon Council approval, Staff will publish the Public Hearing Notice in the Anoka Union Herald on October 26 and November 2, 2018. Staff will also mail Public Hearing Notices to the owners of all benefiting properties. Observations/Alternatives: Observations: If these streets are not reconstructed in 2019, they would need to be added to the next 5-year SROP to allow reconstruction between 2020 and 2024 instead. However, this would reduce the amount of pavement maintenance work that can be completed in 2019 since no new streets can be added to the current 5-year SROP, which is attached for reference. This is the final year of the 2015 - 2019 Street Reconstruction and Overlay Program (SROP). Developed properties along the project corridor may have private irrigation systems. Impacts to these systems may