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RESERVE ADVISORS ASPHALT DIAGRAM Sealcoat or Wearing Surface Asphalt Overlay Not to Exceed 1 .5 inch Thickness per Lift or Layer Original Pavement Inspected and milled until sound pavement is found, usually comprised of two layers Compacted Crushed Stone or Aggregate Base Subbase of Undisturbed Native Soils Compacted to 95% dry density O Reserve Advisors The manner of repaving is either a mill and overlay or total replacement. A mill and overlay is a method of repaving where cracked, worn and failed pavement is mechanically removed or milled until sound pavement is found. A new layer of asphalt is overlaid atop the remaining base course of pavement. Total replacement includes the removal of all existing asphalt down to the base course of aggregate and native soil followed by the application of two or more new lifts of asphalt. We recommend mill and overlayment on asphalt pavement that exhibits normal deterioration and wear. We recommend total replacement of asphalt pavement that exhibits severe deterioration, inadequate drainage, pavement that has been overlaid multiple times in the past or where the configuration makes overlayment not possible. Based on the apparent visual condition and configuration of the asphalt pavement, we recommend the total replacement method of repaving at Arden Hills City Hall. Preventative Maintenance Notes: We note the following select recommended preventative maintenance activities to maximize the remaining useful life: • Annually: o Inspect for settlement, large cracks and trip hazards, and ensure proper drainage o Repair areas which could cause vehicular damage such as potholes • As needed: o Perform crack repairs and patching Priority/Criticality: Defer only upon opinion of independent professional or engineer Expenditure Detail Notes: Expenditure timing and costs are depicted in the Reserve Expenditures table in Section 3. Page 4.32 - Reserve Component Detail