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03/13/2017 City Council Agenda
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03/13/2017 City Council Agenda
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community. Subsequently, a 12 member Street Repair Review Panel (SRRP) was formed to <br />document the use of the bond proceeds. In 2011, City Council approved the addition of 22 streets <br />selected in the same manner and recommended by the citizen review panel to be repaired. <br />In 2012, a second five-year bond measure was approved by Eugene voters with a prioritized list <br />of 76 street repair projects (Exhibit A) and additional funding to support bicycle and pedestrian <br />improvement projects. The list was developed using the same criteria as above and approved by <br />City Council. <br />Sustainable Construction <br />Since 2008, Eugene has been in the forefront of sustainable construction and paving practices, <br />some of which include paving with warm mix asphalt (WMA), using reclaimed asphalt <br />pavement (RAP), and full depth reclamation (FDR). Production of warm mix asphalt is a "green" <br />solution for the environment with noticeable reduced energy consumption and greenhouse gas <br />emissions. Exposure to fuel emissions, fumes, and odors are reduced for asphalt producers, <br />construction workers and the public. Benefits of paving with WMA are the ability to extend the <br />paving season in colder weather, longer haul distances, and better road performance. Warm mix <br />asphalt is identical to conventional hot mix asphalt, except that through a special mixing process <br />it is produced at a temperature approximately 50 to 100 degrees cooler than conventional hot mix <br />asphalt. This mixing process for asphalt aids in compaction during paving, assists in preventing <br />premature aging and slowing the aging process of asphalt. In Eugene, all asphalt producers have <br />retrofitted their plants to produce warm mix asphalt. <br />Council set goals in 2011 for waste reduction by requiring that the quantity of materials placed in <br />landfills be reduced. In addition to using WMA, Public Works conducted two pilot projects <br />specifying that reclaimed asphalt shingles (RAS) be used as a binder in the asphalt mix, thereby <br />keeping this material from entering the waste stream. The City continues to use warm mix <br />asphalt and in-place recycling techniques to improve the quality, environmental footprint, and <br />cost efficiency of the street bond projects. Key terms in sustainable construction practices: <br />In -Place Recycling: A process in which a large piece of equipment called a reclaimer <br />pulverizes and mixes the existing base rock and a portion of subgrade soils with dry cement <br />and water to create a cement -treated base. This process greatly reduces the use of virgin <br />materials and trucking that are needed using conventional remove -and -replace construction <br />techniques. <br />Full Depth Reclamation: When applicable, partial or full -depth reclamation (FDR) is used as <br />a cost and time -saving alternative to traditional reconstruction. Associated costs include <br />replacement of striping and pavement markings, adjustment of manholes, and other work <br />needed to return the street to normal operation. <br />Crack Seal: Placing specialized materials into cracks in unique configurations to keep water <br />and other matter out of the crack and the underlying pavement layers. Crack sealing can be <br />used for two different reasons in pavement maintenance. One is a treatment to seal the cracks <br />in order to prevent moisture intrusion into the pavement. The other is preparatory work to <br />other treatments, such as overlays, and slurry seals. <br />15 <br />
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