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

Home

Reclamation (FDR) process. This process involves reclaiming the entire existing bituminous pavement section, along with the existing aggregate base material. A portion of this reclaimed (ground and mixed) material would then be spread and compacted on top of the reshaped and compacted subgrade. Then, 3.5 inches of bituminous pavement would be placed, generally meeting the City of Ramsey's standard pavement design for residential streets. Existing ditches will likely require re -grading and other drainage construction is likely, however, driveway culverts are generally not anticipated to be affected by this project. Additional storm sewer is anticipated to be added to improve storm runoff water quality prior to flowing into Trott Brook. Drainage easements may be needed in one or more locations. The engineer's opinion of probable costs for completing the proposed improvements outlined in this report is $502,555.46. 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 B A total of 21 assessable parcels have been identified. Staff recommends applying 25-percent of the eligible project costs equally across the 21 assessable properties using the "per lot" assessment method. Eligible project cost include everything except subgrade corrections and guardrail modification costs. This results in a proposed preliminary assessment rate of $4,418.30 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. Seven (7) soil borings were completed by Northern Technologies (NTI) to assist with the preparation of this report. Pavement design recommendations were offered by NTI, and Staff considered and incorporated NTI's recommendations to varying degrees while preparing this report. Ground Penetrating Radar (GPR) was conducted on 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 NTI's Geotechnical Exploration Report are attached inAppendix C. 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: