2009-09-22_PWETC_AgendaPacket - Laserfiche WebLink

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funding continues to be less than that required to maintain the Review of Trash streets at their current condition the quality of the City's streets will C Q ~ decrease over time and maintenance costs will increase. This is a O eC~lOrl negative cycle and one that should be avoided if at ail possible. I rn pacts ' Analysis h Omen Competition vs.__Districted Collection Impacts In general, all other factors the same, moving from an open competition collection system to a districted collection system would be expected to reduce the number of vehicle miles traveled with a corresponding decrease in the associated street maintenance impacts. However, when considering trash truck street maintenance impacts and the potential effect of districted collection on those impacts it is important to consider that: ^ Bath the size of the collection vehicles and the average number of passes each vehicle makes down each residential street segment may change under a districted system. As a result the impact per vehicle may be more or less than under the current open competition system. ^ At least one hauler provides both residential and commercial service with the same vehicle. if that hauler was not awarded a residential district its vehicles would continue #o impact those residential streets it uses to access commercial accounts, assuming it continued to provide commercial service. ^ If a hauler{s} not currently providing residential or commercial service in the City was awarded a district under a competitive procurement, that hauler might also compete for commercial accounts with a resulting increase in commercial trash truck impacts. Our approach to projecting trash truck street maintenance impacts is based on common principles of pavement design and vehicle loading. The basic premise is that all vehicles, including trash trucks, exert an impact on streets that can be quantified. That impact or "vehicle loading" can be expressed as an Equivalent Single Axie Load {ESAL), which is a function of the vehicle's weight and the distribution of that weight over the vehicles axles. By projecting the number and type of vehicles {e.g., cars, trucks, trash trucks) that travel on a street over its design life, and the average ESAL associated with each vehicle type, the total ESALs that street will experience can be calculated. The relative impact associated with a specific type of vehicle {e.g., trash trucks) can then be determined based on the percentage of the total ESALs attributed to that vehicle type. Far purposes of our analysis, we requested information on the types of residen#ial trash and recycling trucks Used by the licensed haulers and their average load weights. We also obtained Section 2 - 3