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Western Lake Superior Sanitary District (WLSSD) has a volume -based rate structure in its solid waste ordinance (covered in more detail in Section 4 of this report). 2.5.3 Transportation (Transfer Haul Costs) Foth has developed a spreadsheet model for estimating transfer hauling costs which allows for incorporating different assumptions for key variables such as fuel costs, average travel speeds, tons hauled per load, one way miles, etc. The model then calculates the costs and converts them to some commonly used rates such as cost per ton, cost per ton -mile, cost per hour, and cost per mile. The model is depicted using common assumptions for two different hauling distances in Table 2-4 (example A is 90 miles and B is 120 miles). The model was recently calibrated with actual hauling quotes. The electronic copy of the model has been provided to the MPCA as part of the project. Part of the usefulness of the model is that it helps to gauge the potential impact when different variables are changed. For example, in Table 2-4A, if the fuel cost per gallon increases by $1.00 from $3.00 to $4.00 per gallon, the cost per ton is projected to increase from $16.20 to $17.84, an increase of $1.64 per ton or an approximate 10% increase in the cost per ton for a 3 3 % increase in fuel cost per gallon. Numerous other sensitivities can be developed with the model. R - Analysis of Waste Collection Service Arrangements.doc Foth Infrastructure & Environment, LLC • 37 June 2009