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Feasibility Report TKDA Project No. 18196.000 City of Arden Hills Page 7 in the appendix in Exhibit 7; additionally the typical cross sections for the Arden Oaks neighborhood can be found under Exhibit 3. Curb and Gutter: The current condition of the curb and gutter along Arden Oaks is mostly acceptable with exception to the few areas with settling, large cracks, and drainage issues. In general, the curb on Arden Oaks Drive appears to be functional in a drainage perspective and aesthetically in good condition. A large majority of the curb that was in functional condition had vegetation growing in the expansion joints. The vegetation seemed to be trapping sediment and other debris causing water to spill out of the gutter onto the roadway. On the south end of Arden Oaks Drive there appears to be an existing concrete apron that has been overlaid with bituminous blocking water from traveling from west to east. The buildup of material from various maintenance operations has caused localized drainage issues. Utilities: The existing sanitary sewer in the neighborhood is 8” PVC sewer pipe with concrete manholes and adjustment rings, the existing watermain in the neighborhood is 6” DIP and the storm sewer is various sizes of 12” to 18” reinforced concrete pipe. All utilities in the neighborhood were constructed with the original roadway around 1983. From field inspection, most castings in the neighborhood appear to be acceptable in both function and aesthetic. It was noted that some structures looked to be covered in debris and beginning to collect sediment in the gutters around them. Additionally some of the curb and gutter around the catch basins has begun to crack and sag causing drainage issues and sedimentation. The drainage issues could potentially lead to pavement damage by allowing water into the pavement section. It was noted that some of the catch basin rings are beginning to deteriorate and break off into the structures. Some sedimentation was noted in the structures. Watermain within the neighborhood consists of 6” ductile iron pipe which was installed in 1983. The watermain functions well and is not proposed for improvement. Maintenance does not note deficiencies in the watermain systems in this neighborhood. Valve casting adjustments would be needed with street improvements. Sanitary sewer pipe includes 8” PVC pipe which was also installed in 1983. The pipe and structures are in good condition and do not require improvement. The rings and casting adjustments would be completed with street improvements. Figure 3. Deteriorated Curb Arden Oaks Drive Figure 4. Failing Rings in Catch Basin Arden Oaks Drive. DRAFT REPORT 7-8-2021