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Memorandum to Dennis Trooien, Dennis Properties Subject: Traffic and Parking Study for Proposed Redevelopment of Arden Plaza Page 5 of 15 September 17,2007 redevelopment will not significantly alter the trip generation for the site during the a.m. peak hour. During the p.m. peak hour and on a daily basis, the proposed redevelopment will increase the trip generation for the site by about 50 percent. Table 1 Weekday Trip Generation for Arden Plaza A.M. Peak Hour P.M. Peak Hour Daily Scenario In Out Total In Ont Total Total Existing uses with full occupancy ]57 53 210 203 262 465 4,900 With proposed redevelopment ]22 82 204 358 347 705 7,600 Traffic Operations at Subiect Intersections (question b) To determine the extent to which the proposed redevelopment would alter the traffic operations at the two driveway intersections, we completed the following steps: I) Base traffic counts. As described earlier, we completed existing (2007) traffic counts at the two driveway intersections and at the Lexington A venue/County Road E intersection during the p.m. peak period on a typical weekday. Our traffic counts were adjusted to account for full occupancy of the existing uses as discussed previously. These adjusted 2007 counts form the basis for our traffic forecasts and analyses for the post- redevelopment condition. 2) Analysis year and background growth. Consistent with normal practice, we completed traffic forecasts and analyses for the year after expected full completion of the proposed redevelopment, which is 2009. Based on comments raised by County staff, a 1.5 percent per year background growth rate was applied to existing through volumes on County Road E and Lexington A venue to establish 2009 no-build volumes. 3) 2009 post-redevelopment forecasts. Traffic volumes due to the existing office buildings were first removed from the 2009 no-build volumes at the subject intersections. Trip generation presented in Table 1 for the proposed redevelopment represents gross trips. Due to the multi-use nature of the subject development, we expect that a portion of the trips generated by the various uses will occur internal to the site. To account for these internal trips, we reduced the gross trip generation for the proposed new retail uses by five percent to arrive at net trips. These net trips due to the proposed three new retail buildings were assigned to the two driveways based on expected directional distribution and location of each new building relative to the driveways. The following are our