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BACKGROUND On June 7, 2022, City Council awarded the construction contract to the lowest responsible bidder, O'Grady Paving, Inc., in the amount of$3,316,272.50 and authorized the Director of Engineering to approve change orders up to the project contingency amount of$504,090. The streets repaired under this project were prioritized for treatment through the City's Pavement Management Program. There were two components to this project: the first was roadway repaving and the second component was pavement preparation work on streets that received slurry sealing treatment under a separate project. On February 7, 2023, City Council approved Contract Change Order No. 5 to the contract with O'Grady Paving, Inc., for $300,000 to implement the Phase 1 "quick build" bicycle lane improvements and roadway repair on West Las Positas Boulevard, between Hopyard Road and Hacienda Drive, and the transfer of$300,000 from the West Las Positas Boulevard Reconstruction Project, CIP No. 11514, to the subject project. DISCUSSION The first component of the project consisted of repaving 1 million square feet of pavement with a new layer of asphalt concrete (overlay), as well as 100,000 square feet of isolated full-depth pavement repairs prior to the overlay, adjusting utility covers to grade, installing traffic signal vehicle detection loops, and traffic striping. Three different reconstruction methods were utilized in this project. The reconstruction method used is dependent on the pavement condition of each street. The reconstruction methods used are described below. 1. Overlay (OL): This reconstruction method involves milling the edges of the existing pavement and placing a new surface course of 1.5 to 1.75 inches of new asphalt concrete over the top of the existing pavement. Milling the edges is necessary to conform the new overlay with the existing curb and gutter elevation. 2. Overlay with Fabric (OUF): This reconstruction method involves milling the edges of the existing pavement and placing a layer of paving fabric on the surface of the existing pavement prior to applying a new surface course of 1.75 inches of new asphalt concrete over the top of the fabric. Paving fabric is needed when the existing pavement has cracking caused by swelling and shrinking associated with heat and cool cycles. The paving fabric "bridges" these cracks that are only in the surface layer. Without the fabric, the cracks would quickly propagate to the surface of the new pavement. This is known as "reflective" cracking. 3. Pavement Milling and Overlay (Mill/OL): This reconstruction method involves the removal of the existing asphalt concrete surface layer of the entire street surface by milling, then applying 1.75 inches of asphalt concrete over the entire street surface. The milling of the entire street surface is necessary on streets for which performing an OL would raise the crown and increase the cross slopes, particularly along the parking lane, to an unsatisfactory level. Page 2 of 6