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Debra Bloom, P.E. .Ianua~y 15, 2008 City of Roseville Page 9 The McGough proposed Iona Lane connection is not in compliance with the previously planned Twin Lakes AUAR internal roadway configuration, nor is it in compliance with the access spacing gusdelines of Ramsey County {full-access intersection spacing with traffic signal control). Therefore, this connection was nat included in any of the three roadway configurations previously discussed. Tl~e operation analysis sections that follow discuss the impacts associated with each of the previously described alternatives and the necessary improvements needed to operate acceptably. It should be noted that only modest improvements are reviewed for each alternative before considering the next alternative as a mitigation strategy far acceptable operations. TRAFFIC FORECASTS The proposed development will be completed in year 2010. Therefore, traffic forecasts were developed for year 2011 {one year after construction). In addition to year 2011 forecasts, year 2016 forecast volumes were developed in order to review the adjacent roadway network with other developments constructed in the Twin Lakes redevelopment area. Based on existing growth patterns, regional fronds and the potential for additional adjacent development to occur within the immediate Twin Lakes Park redevelopment area, an annual growth rate of one-half percent was applied to the existing peak hour volumes to develop year 2011 and 2016 background traffic forecasts. Based an discussions with City staff, one additional development was assumed constructed (Cleveland Avenue Hotel) under year 2011 conditions. This adjacent development is located in subarea I, black 3b. Under year 2016 conditions, multiple adjacent developments were assumed constructed in subarea I, blocks la, 3a and 4. Refer to Figure 3 for subarea and block locations for each development. The trips generated by these developments were included in the year 2011 and 2016 build traffic forecasts and analysis. As shown in Table 2, trip generation estimates for the proposed and adjacent developments were generated based on information in the 2003 1TE Trip Generation Reports. Due to the mix of land uses, developed at different points in time, a modest multi-use and multi- modal reduction factor was applied to the trip generation estimates {this value was leveraged from the work completed as part of the Tivrn Lakes AUAR URdate). This reduction was taken as an internal capture percentage far each respective use. The directional trip distribution for the proposed development is based on existing travel patterns, regional daily traffic volumes, and previous studies ir- the area {see Figure 6: Directional Distribution). The combination of background traffic, trips generated by the proposed development and adjacent developments for year 2011 and 2016 are shown in Figures 7 and 8, respectively.