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RE7.A. - Page 417 Expansion Project#:11637.0 Auyus�v,�v�� Page 2 memorandum provides an assessment the transportation and trip generation changes expected to result from increasing the existing fuel station to 5 islands (20 fueling positions) to determine if an Environmental Impact Report (EIR) will be necessary for the development proposal from a transportation perspective and,if so, a reasonable scope for the EIR transportation components. CONTEXT & HISTORY The project site is currently developed with a Costco warehouse building and a 3 island (12 fueling position) Costco Gasoline fuel station. The fuel station was initially approved for development in 2007 and has been operational since October 2009. The initial project site plans, EIR study, and approval process completed for the 2007 approval all included and assumed traffic and impact for a 4 island (16 fueling position) Costco Gasoline facility. However, at the final Conditional Use Permit (CUP) hearing for the project approval, the Zoning Administrator modified the project and only approved the project with a 12 fueling position fuel station to address neighborhood concerns related to traffic congestion,vehicle idling, and queuing at the fuel pumps. Since the fuel station has been in operation, it's been observed that having only 12 fueling positions is not sufficient to serve and process the existing demand in an efficient manner.As such, relatively long queues and wait times are experienced at the fuel station during peak periods because there are not enough fuel dispensers to efficiently serve the peak demand. Costco is now seeking approval to expand the fuel station to 5 islands with 20 fueling positions. This study will evaluate what effect the proposed fuel station expansion will have on overall traffic generation to and from the site, traffic impacts on the surrounding street network, on-site vehicle queuing and wait times at the fuel station, and circulation and flow throughout the Costco site. EXISTING SITE TRANSPORTATION CHARACTERISTICS A detailed inventory of the site's existing transportation characteristics was collected in May of 2011. The transportation data was collected before the Memorial Day weekend as requested by the City to ensure it captured typical peak characteristics with schools in session. Data was collected related to peak period site driveway traffic counts, peak period on-site traffic counts (at the fuel station and at key internal site intersections), fuel station queuing, fuel station wait times, and peak periods parking supply and demand. Kittelson&Associates,Inc. Boise,Idaho