10-12-2022 Council Packet - Laserfiche WebLink

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Prepared by: Bolton & Menk, Inc. SUNSET COURT 2023 Street Improvements (Sunset Court, Sunrise Dr, Spruce St) ǀ 0N1.127995 Page 3 improvements to ensure they outlast the pavement improvements proposed in this report. Proposed Improvements 1. Street Improvements Based on the pavement age and current distresses, the proposed street improvement for Sunset Court is a full depth reclamation (FDR). Current pavement distress patterns indicate surface-level wear but no significant deterioration of the roadway base. Full depth reclamation is a cost-effective rehabilitation method that grinds the top 10-12 inches of existing bituminous pavement and aggregate base into a new aggregate that creates an improved foundation for 4 inches of new bituminous pavement. In addition to pavement reclamation, curb and gutter that is cracked, weathered, or heaved will be removed and replaced with new curb and gutter. This improves stormwater conveyance to catch basins and prevents the intrusion of stormwater into the roadway base. 2. Watermain Improvements The existing ductile iron watermain is in good condition and is proposed to be left in place. However, inspection and replacement of existing bolts at gate valves, hydrants, and mainline fittings is proposed. These features are typically the first to fail in the water system and proactive replacement of these bolts would limit the number of leaks and watermain breaks 3. Sanitary Sewer Improvements The existing sanitary sewer network is in good condition and is proposed to be left in place. However, two structures may require some minor repairs to inverts and doghouses. Structures that receive new castings will also be fitted with exterior chimney seals to prevent inflow and infiltration (I/I). 4. Storm Sewer Improvements Overall, the existing storm sewer system is in good condition and proposed to be left in place. However, it is proposed that a few structures receive new castings and/or lids. Remaining catch basins will receive inflow and infiltration (I/I) barriers along with minor repairs to inverts and doghouses. 5. Water Quality Improvements Rehabilitation of Sunset Court will not trigger Ramsey-Washington Metro Watershed District (RWMWD) stormwater improvements. However, residents will be given the opportunity during final design to opt into the City’s rain garden program. Any raingardens installed would be credited by the watershed towards other or future street improvement projects that trigger stormwater improvements.