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4. CONSIDERED IMPROVEMENTS <br />4.1 Project Area Selection <br />The City's 10-year Capital Improvement Program calls for proposed 2-inch mill and overlay <br />improvements on the streets in the Regency Pond residential neighborhood in 2022, and in <br />Business Park 95 in 2024. The scope of these proposed improvements is included in Appendix A <br />of this report. <br />4.2 Pavement Condition Evaluations/Ratings <br />City Staff generally evaluates and rates the pavement conditions of all city streets on an annual <br />basis using the Pavement Surface Evaluation and Rating (PASER) system. This system requires a <br />visual evaluation of each pavement surface, which is reflected by a 0 to 10 scale, with 10 being a <br />new street. A PASER rating summary of each street segment is included in Appendix B of this <br />report. <br />4.3 Full -Depth Reclamation <br />Recently, including in 2017 and 2018, streets with pavement sections in similar condition were <br />evaluated for mill and overlay improvements but were instead improved using the full -depth <br />reclamation process. This involves grinding the existing bituminous pavement up, along with a <br />portion of the underlying aggregate base, placing and compacting this reclaim material on top of <br />the existing aggregate base, removing 31/2-inches of reclaim material, then placing 31/2-inches of <br />new bituminous pavement on top. In general, the streets are still at the stage where with <br />maintenance, Staff feels they can be serviceable for up to 10 years, allowing the City's limited <br />funds to be spent on streets which are better candidates for overlays, or are ready for reconstruction <br />now. <br />Staff prepared a preliminary engineer's estimate for full -depth reclamation (FDR) improvements <br />for streets in the Business Park 95 industrial park, which totaled $918,332. Considering that the <br />anticipated service life for FDR improvements is up to 60 years, FDR improvements would be <br />significantly more cost-effective than mill and overlay improvements, which would cost more than <br />half what FDR improvements cost, and generally have an anticipated service life of 15 to 20 years. <br />Feasibility Report <br />Amended 2020 Pavement Overlay Improvements <br />City of Ramsey Project No. 20-02A <br />5 <br />