06-15-2020-WS - Laserfiche WebLink

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Page 2 of 4 Four core samples were collected along Lake Valentine Road as part of a recent pavement forensic analysis. The analysis indicates that recycled aggregate material in the road base may be the root cause of the formation of cracking as well as the tenting of the transverse cracks. Full depth reclamation (FDR) is recommended as a long-term fix to this problem. The scope of a full depth reclamation along with the additional effort to address the aggregate base material has significantly increased the cost of the proposed improvements from the original scope of a standard overlay. Based on the above information, staff is recommending that improvements to Lake Valentine Road are not included in the proposed 2021 PMP Street and Utility Improvements. While the tenting that occurs along isolated lateral cracks degrades the ride quality during the winter, the existing pavement has valuable remaining service life compared to other deteriorated street segments in the City. Staff recommends that street improvements for Lake Valentine Road be rescheduled for the year 2028 and that further analysis be conducted to determine the full extent of necessary repairs to the aggregate base material under the pavement. Council Direction: Does the City Council support changing the schedule for street improvements along Lake Valentine Road to the year 2028 as proposed in the draft CIP? 2. Extent of Water Main and Sanitary Sewer Reconstruction: The existing lateral sanitary sewer system within the Hazelnut Park Neighborhood was lined in 2013 and remains in good condition based on recent inspections. Proposed sanitary sewer improvements include resetting manhole castings, minor manhole repairs, and repairs to sanitary sewer services at 19 locations as shown on Attachment B, where root intrusion or damaged service connections were noted during sewer inspections. The project cost estimate includes expenses for installing a cured in place pipe (CIPP) liner within the 21-inch diameter sanitary sewer along Prior Avenue and within Hazelnut Park, which has been in service for approximately 60 years. Existing water main along Edgewood Avenue and the west portion of Jerrold Avenue consists of ductile iron pipe installed in 1977 and is proposed to remain in-place. Water main within the neighborhood does not have a history of water main breaks based on City records. Removal and replacement of water main along Edgewood and Jerrold would require removal of a significant portion of the existing curb, which is in good condition. Future replacement of this water main would be more cost effective when the roadway is due for full reconstruction. Water main along the east portion of Jerrold Avenue and the full length of Glenpaul Avenue is recommended to be replaced with the improvements as shown in Attachment C. This work would include replacement of all gate valves, fittings, hydrants, water services and curb stops. Council Direction: Does the City Council have questions or concerns regarding the proposed extent of utility replacements described above? 3. Prior Avenue Assessments: The proposed improvement area includes a segment of Prior Avenue extending from County Road D to Jerrold Avenue. There are no residential properties within the improvement area having a street address on Prior Avenue. The City of Arden Hills Assessment Policy states that “All R-1 and R-2 residentially zoned properties with frontage abutting a street that is reconstructed shall be assessed on a per unit basis at the residential equivalent assessment rate.” The policy further states that “Corner lots shall be assessed on the street that is used for the mailing address.” Assessment rate calculations are being completed with the assumption that