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14
City of Pleasanton
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CITY CLERK
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AGENDA PACKETS
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2020
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061620
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6/11/2020 11:02:47 AM
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CITY CLERK
CITY CLERK - TYPE
AGENDA REPORT
DOCUMENT DATE
6/16/2020
DESTRUCT DATE
15Y
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FINANCIAL STATEMENT <br /> Project funding totals $3.1 million dollars with $27,788 expended to date. The total <br /> estimated project expenditure is $4,544,390, leaving a project shortfall of $1 ,444,390. <br /> Staff recommends the transfer of $385,000 from various CIP projects, and an allocation <br /> of $1,059,390 from the Measure F fund and the Streets CIP fund, as outlined in the <br /> recommendations above to complete funding for this project. Funding and anticipated <br /> project expenditures are detailed in Attachment 1. <br /> BACKGROUND <br /> The City has two annual projects designed to maintain roadway infrastructure. One <br /> project resurfaces various roadways by overlaying existing pavement with a new layer <br /> of asphalt concrete, while the other project slurry seals a different set of roadways for <br /> preventative maintenance. These projects, working in tandem, are designed to maintain <br /> the City's roadway pavement. <br /> The Annual Street Resurfacing and Preventative Maintenance Project has two <br /> components. The street resurfacing component includes installing a new layer of <br /> asphalt concrete over the existing pavement, repairing pavement distressed areas, <br /> crack sealing, adjusting manholes and water valve boxes to grade, installing pavement <br /> markers, and installing traffic detector loops. The roadway preventative maintenance <br /> component includes preparatory work for the upcoming Annual Street Slurry Seal <br /> Project, CIP No. 20504. The preventative work will include sealing pavement cracks and <br /> repairing pavement in isolated distressed areas. This preparatory work is required prior <br /> to the slurry sealing operation, but is included as part of the paving project for both cost <br /> savings and optimal results. The slurry seal project is scheduled to begin construction <br /> immediately after the completion of this project's preventative maintenance component. <br /> DISCUSSION <br /> The first component of the project consists of resurfacing approximately 1.4 million <br /> square feet of pavement on the streets listed in the table below (see Attachment 2 for <br /> map). Depending on the condition of the existing street, the appropriate roadway <br /> rehabilitation treatment method(s) listed below are used. (The column on the right of the <br /> table indicates the treatment that will be used on each street section.) <br /> Overlay (OL): This construction method involves grinding the edges of the existing <br /> pavement and placing a new surface course of 1.5 to 1.75 inches of new asphalt <br /> concrete over the top of the existing pavement. Grinding the edges is necessary to <br /> conform the new overlay with the existing curb and gutter. <br /> Overlay with Fabric (OL/F): This construction method involves grinding the edges of the <br /> existing pavement and placing a layer of paving fabric on the pavement prior to applying <br /> a new surface course of 1.5 to 1 .75 inches of new asphalt concrete over the top of the <br /> existing pavement. The paving fabric is needed when the existing pavement has <br /> cracking caused by heating and cool cycles. The paving fabric "bridges" these cracks <br /> that are only in the surface layer. Without the fabric, the cracks would quickly propagate <br /> to the surface of the new pavement, known as "reflective" cracking. <br /> Pavement Milling and Overlay (Mill/OL): This construction method involves the removal <br /> of the existing asphalt concrete surface layer of the entire street surface by cold-plane <br /> milling, then applying of 1.75 inches of new asphalt over the street surface. The milling <br /> Page 2 of 7 <br />
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