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The following graph identifies the trigger points (OCI) for each treatment based on Functional Class. <br />Sustainable Construction <br />Since 2008, Eugene has been in the forefront of sustainable construction and paving practices, some <br />of which include paving with warm mix asphalt (WMA), using reclaimed asphalt pavement (RAP), <br />and full depth reclamation (FDR). Production of warm mix asphalt is a "green" solution for the <br />environment with noticeable reduced energy consumption and greenhouse gas emissions. Exposure <br />to fuel emissions, fumes, and odors are reduced for asphalt producers, construction workers and the <br />public. Benefits of paving with WMA are the ability to extend the paving season in colder weather, <br />longer haul distances, and better road performance. Warm mix asphalt is identical to conventional hot <br />mix asphalt, except that through a special mixing process it is produced at a temperature <br />approximately 50 to 100 degrees cooler than conventional hot mix asphalt. This mixing process for <br />asphalt aids in compaction during paving, assists in preventing premature aging and slowing the <br />aging process of asphalt. In Eugene, all asphalt producers have retrofitted their plants to produce <br />warm mix asphalt. <br />12 <br />