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Review of Trash <br />Collection <br />Impacts <br />~3 <br />manufacturer axle weight profiles for the same or similar truck <br />types and reviewed traffic count data and street maintenance <br />expense and funding information provided by the City. Information <br />provided was used to develop residential trash and recycling truck <br />axle weight profiles. This information was then used to project the <br />impacts of trash and recycling trucks on the City's residential <br />streets, which was expressed as percentage of the total vehicle <br />impacts experienced by those streets. <br />In developing the projections it is important to note that the <br />calculated impacts are based in part on various assumptions <br />including: <br />= The average number of vehicle trips per residential street; <br />= The percentage of total vehicle trips made by trucks other <br />than trash and recycling trucks and the average axle <br />weights of #hose vehicles; and <br />= The average number of trash and recycling truck trips per <br />week on a typical residential street. <br />Reasonable changes to those. assumptions can have a material <br />impact on the calculated impacts. <br />Nofe: One hauler uses vehicles with a single fixed rear axle and <br />a pusher axlee. The impact of those vehicles increases <br />significantly if fhe pusher axle is not used during collection <br />operations. Also pusher and fag axles generally have two <br />tires per axle rafher than four, which also increases the <br />impacts relative to a fixed rear axle with four tires. <br />Table 1 below provides a comparison of the calculated combined <br />trash and recycling truck impacts an residential streets as a <br />percentage of the total vehicle impacts. The table presents the <br />results for various assumptions regarding the average number of <br />passes trash and recycling trucks make each week on residential <br />streets. <br />The table also provides: <br />= The allocation of the annual cast required to maintain the <br />residential streets at their current condition to trash and <br />recycling trucks in proportion to their calculated vehicle <br />impacts; and <br />= The projected annual carbon dioxide (C02) emissions <br />associated with each scenario. <br />s A dead axle, also called lazy axle, is not part of the drive train but is <br />instead free-rotating. Many trucks and trailers use dead axles for strictly <br />load-bearing purposes. A dead axle located immediately in front of a <br />drive axle is called a pusher axle. A tag axle is a dead axle situated <br />behind a drive axle {Source: Wikipedia). <br />Section 2 - 4 <br />