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TJlal <br />Tranipor~sion <br />Condulbnts <br />5. Determine the Cort per Trip Using the Interchange <br />Because all peak hour trips contribute to the need for interchange improvements, the total of all <br />trips is used as the divisor for the estimated capital cost of $27 million for all improvements. Only a <br />portion of this cost can be financed by new development -that is, only the increment of traffic <br />from new development in San Leandro, defined as new traffic from development within the four <br />quadrants depicted in Figure 1 less existing traffic at the interchange is used as a basis for traffic <br />impact fee supplements in this analysis. For sites with existing traffic, it is necessary to provide a <br />credit for existing traffic and only use the increment over existing traffic volumes created through <br />more intense development. <br />6. Define the Development Fees by Generalized Lond Use Categories <br />Once the cost per trip is determined, by using Trip Generation by the Institute of Transportation <br />Engineers, it is possible to estimate the fee per square foot of development or other suitable unit <br />such as a single house. This is a parallel procedure to how the current Development Fees for Street <br />Improvements (DFSI) were calculated. <br />.Page S <br />Final Report - Tragic Impact Fee Analysis for 1-880/Marina Interchange Improvement November 12, 2009 <br />