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Timm <br />TtamperhWW <br />cow <br />Davis Street interchange and get on at Marina to avoid 1-880 congestion north of Marina Boulevard, <br />and there are also other trip patterns where regional traffic stays on surface streets to avoid 1-880 <br />congestion in the peak hours. The main consideration, however, is that traffic at the currently - <br />congested interchange is expected to increase by 87 percent Clearly, capacity improvements are <br />needed. <br />Using the 14,814 total interchange trips in the a.m. and p.m. peak hours, and an interchange <br />improvement cost of $27,000,000, the cost per trip is $1,823 in 2008 dollars. Excluding the Kaiser <br />Hospital and ICI Retail projects for which interchange fees have already been paid, an additional <br />1,310 trips from development projects in the impact area (Quadrants 1 — 4) are expected to use the <br />interchange. However, many other trips from these projects will not use the interchange. The total <br />growth in a.m. plus p.m. peak hour trips from development projects in the impact area is 6,890. By <br />factoring the $1,823 per trip cost by the proportion of trips from projects in the impact area <br />expected to use the interchange yields a $379.11 per trip fee for projects in the impact area. The per <br />trip fee is then calculated for units such as per dwelling unit or per square foot of building area, etc. <br />for each of the existing DFSI categories. <br />From 2009 through 2030, imposition of these supplemental fees in the DFSI program should <br />generate approximately $2.39 million in addition to impact fees already collected by the city for the <br />Kaiser and ICI Retail projects. Of course, standard DFSI fees would also be imposed as they are for <br />all development projects in the city. <br />Figure I shows the project vicinity map, the location of the interchange, the geographic area of <br />property primarily served by the interchange (the impact area), and the locations of the two major <br />development projects, ICI Retail and Kaiser Permanente Hospital. <br />Page 2 <br />Final Report — Traffic Impact Fee Analysis for 1-880/Morino Interchange Improvement November 12, 2009 <br />