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Todd Blomstrom, PE May 6, 2020 Page 4 Summary and Recommendations The cores obtained within the Arden Oaks area had bituminous depths ranging from 5.75 inches to 7 inches, with at least 3 inches of underlying aggregate base. Three of the cores were in good condition, while the others exhibit distresses such as delaminat ion or deterioration. The cores had a top lift of 1.5 inches, 2 inches, or 2.5 inches. The surface of the streets (excluding the segment where Core 9 was obtained) was observed to be in poor condition covered in extensive amount of cracking and patching. Based on the findings from pavement coring, it would be feasible to perform a partial depth mill and overlay on Arden Oaks Drive (excluding the segment where Core 1 and Core 2 were taken). It would be recommended to extend the milling depth beyond the depth of the top lift of the existing bituminous pavement to ensure proper bonding between the new overlay and the underlying existing asphalt. Core 4 showed raveling between pavement lifts, thus, we would recommend the City to account for spots that may need additional patching. It is important to note that a partial depth mill and overlay will not eliminate all the crack patterns within the pavement. Cracks will reflect through the new overlay within a few years. That said, in order to extend the service life of this preservation method, we would recommend the C ity to conduct routine crack sealing. Crack sealing is a cost-effective method to prevent infiltration of water and incompressible material into the cracks. Along the segment where Core 1 and Core were taken, it would be recommended to perform a full depth reclamation (FDR). It is our understanding that there were base issues along this segment where water is seeping out through the bituminous pavement. An FDR would be able to help address the base issues. This rehabilitation method would also remove all the existing distresses, and re-blend the bituminous and a portion of the aggregate as a base to re-pave over, essentially creating a new roadway section.