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Feasibility Report TKDA Project No. 18196.000 City of Arden Hills Page 9 Curb and Gutter: Existing curb and gutter will remain in place except for curb that is damaged, settled, or not draining properly. The existing curb will be inspected and marked for removal prior to construction. It is typical to see between 20% to 30% curb replacement for residential roadways of this age due to settlement or cracking. From examination of the curb in the field, it was found that approximately 30% +/- 5% of the curb would need to be replaced due to cracking and settlement. For the purposes of this report and estimates, 30% was used for calculation of project costs and scope. One portion of curb, approximately 300 feet in length around the Arden Oaks Drive cul-de-sac extending down the south curb line approximately 100 feet, was noted during field inspection as being in poor condition. It is recommended the curb in that stretch be replaced in its entirety. In addition to the curb being replaced, it is recommended that drain tile be installed around the radius of the cul- de-sac to the catch basin located on the south side curb of the Snelling Avenue Arden Oaks intersection. A valley gutter is also recommended at the Arden Oaks Drive County Road E intersection to better facilitate drainage through the intersection. In addition to curb and gutter replacement, driveways impacted by replaced curb and gutter will be patched with similar materials. Turf disturbed as a part of the curb replacement process will be restored with 6” topsoil and residential grade seed. Utilities: It is recommended that all the manhole and catch basin rings be replaced as a part of the pavement rehabilitation project. It is typical to reset all manhole and catch basin grades to match the new grades of the roadway to improve drivability and drainage. In addition to the adjustment rings, outdated and damaged manhole and catch basin casting assemblies will be replaced with modern castings. Storm sewer manholes and catch basins and sanitary manholes will be adjusted with all new concrete rings. Sanitary sewer manholes will be recast with all new concrete rings and infiltration prevention products to limit inflow and infiltration into the sanitary system. Resident Input: On May 7, 2021, an informational letter including a questionnaire was sent to the 40 property owners adjacent to the Arden Oaks project to inform them of upcoming street improvements and give basic project information. The questionnaires asked several questions including drainage and erosion issues, pet fences and other private utilities, traffic and pedestrian issues, and other resident concerns. Twenty-eight (28) of the Arden Oaks neighborhood questionnaires were returned, for a 70.0% return rate. The letters, questionnaires, and responses are shown in Exhibit 2. Primary concerns from the questionnaire were localized drainage issues, truck turnarounds, through traffic during congested times, and pedestrian safety while crossing Snelling Ave and County Road E. Several residents requested cross walks to be installed across the Ramsey County collector roads (Snelling Avenue and County Road E) in efforts to make crossing safer and easier. Any crosswalks proposed must follow the Ramsey County procedures and evaluation for consideration. Funding Figure 7. Curb and Gutter from 2020 Mendota Heights Street Project